Evidence in Chinese Criminal Procedure

Overview of Evidence Law in Chinese Criminal Procedure

The law of evidence in Chinese criminal procedure is governed primarily by the Criminal Procedure Law (CPL) , adopted in 1979 and substantially revised in 1996, 2012, and 2018, together with a series of judicial interpretations issued by the Supreme People’s Court (SPC) and the Supreme People’s Procuratorate (SPP) . The Chinese criminal justice system operates within an inquisitorial tradition heavily influenced by civil law systems, yet it has been significantly shaped by domestic political, social, and institutional factors. The 2012 amendments to the CPL represented a watershed moment for Chinese evidence law, introducing for the first time a comprehensive statutory framework for the exclusion of illegally obtained evidence, strengthening the presumption of innocence, and establishing a clearer standard of proof. The 2018 amendments further modernised the system by expanding the rules governing electronic evidence and addressing emerging challenges in digital forensic practice. Despite these legislative advances, the implementation of evidence rules in practice continues to face significant challenges, including the persistence of conviction-oriented investigation practices, reliance on confessions, and institutional resistance to the exclusionary rule within the criminal justice bureaucracy.

The Eight Types of Evidence (Article 50 CPL)

Article 50 of the Criminal Procedure Law enumerates eight categories of evidence admissible in criminal proceedings: (1) physical evidence (wuzheng), comprising objects and traces that carry information relevant to the case, including weapons, tools, stolen goods, and forensic samples; (2) documentary evidence (shuzheng), including documents, letters, certificates, and records whose content is relevant to proving the case; (3) witness testimony (zhengren zhengyan), consisting of statements made by witnesses regarding facts known to them; (4) victim statements (beihaichenshu), the account of the crime given by the person who suffered harm; (5) statements and exculpations of suspects and defendants (fanzui xianyiren beigaoren de gongshu he bianjie), including confessions and defences; (6) expert opinions (jianding yijian), formal conclusions reached by qualified forensic experts; (7) inspection, examination, identification, and investigative experiment records (bikan, jianyan, bianren, kancha, shiyan jilu), including records of crime scene inspections, searches, seizures, and forensic identification; and (8) electronic data (dianzi shuju), added explicitly in the 2012 amendments and confirmed in the 2018 revision. Medical records, accounting records, and audio-visual materials are included within the scope of documentary evidence and electronic data respectively. The list is exhaustive in the sense that material not falling within one of these categories cannot serve as evidence, though the categories themselves are broadly construed.

The Burden of Proof and the Presumption of Innocence

The burden of proof in Chinese criminal proceedings falls on the prosecution: the people’s procuratorate must prove the defendant’s guilt beyond any reasonable doubt (Article 53 CPL). The defendant is presumed innocent until proven guilty, a principle codified in Article 12 of the CPL, which provides that “no person shall be found guilty without a judgment of the people’s court according to the law.” The 2012 amendments strengthened this principle by providing explicit statutory recognition that the defendant bears no burden of proof and that doubts must be resolved in favour of the accused (yi yi you wu, yi yi cong qing). However, the Chinese presumption of innocence is not absolute: the CPL permits the procuratorate to apply compulsory measures including arrest and detention pending trial, and the length of pre-trial detention can be substantial, which undermines the practical operation of the presumption. The principle that the “basic facts are clear” (jiben shishi qingchu) — a standard inherited from the Maoist-era approach to criminal justice — has been progressively displaced by the more rigorous evidentiary standards introduced in 2012, but it continues to influence judicial practice, particularly in cases involving political sensitivity or where the evidence is circumstantial.

The Standard of Proof: “Clear and Reliable, Sufficient Evidence”

Article 53 of the CPL establishes the standard of proof for conviction: the case must be “clear and reliable, with sufficient evidence” (shishi qingchu, zhengju queshi, chongfen). The article specifies three cumulative requirements: (1) every fact relevant to conviction and sentencing is supported by evidence; (2) the evidence on which the conviction is based has been verified through lawful procedures and is admissible; and (3) the evidence, taken as a whole, leads to the conclusion that the crime was committed by the defendant and eliminates reasonable doubt (paichu hehuai huaiyi). The inclusion of the “no reasonable doubt” language in the 2012 CPL was a significant development, introducing a standard familiar to common law jurisdictions into the Chinese statutory framework. The Supreme People’s Court’s 2010 Rules on Reviewing and Judging Evidence in Death Penalty Cases (Guanyu banli sixing anli shenpan zhengju wenti de ruogan guiding), issued jointly with the SPP, the Ministry of Public Security, the Ministry of State Security, and the Ministry of Justice, established particularly rigorous evidentiary standards for capital cases. These rules require that in death penalty cases, the evidence must meet an even higher threshold, with mandatory exclusion of certain categories of unreliable evidence and a strict requirement that any doubt be resolved in favour of the defendant. The rules have been influential beyond death penalty cases, serving as a template for evidence evaluation in serious criminal cases generally.

The Exclusionary Rule (Articles 54–58 CPL)

The 2012 CPL introduced a comprehensive exclusionary rule for illegally obtained evidence, codified in Articles 54 through 58. Article 54 provides that confessions and statements obtained through torture, violence, threats, enticement, or deception (xingxun bigong) must be excluded, as must witness testimony and victim statements obtained through violence, threats, or other illegal means. Physical and documentary evidence obtained through procedures that violate legal requirements must be corrected, explained, or excluded if the violation substantially affects justice. Article 56 establishes a procedure for challenging the admissibility of evidence: the defence may apply for exclusion, and the court must investigate the legality of the evidence collection process. The court may also initiate exclusion proceedings on its own motion. Article 57 places the burden of proving that evidence was lawfully obtained on the prosecution: when the lawfulness of evidence collection is challenged, the procuracy must present evidence to establish legality, including interrogation records, audio-visual recordings of the interrogation process, and witness testimony from the investigators themselves. Article 58 provides that evidence must be excluded if the court determines that it was obtained through illegal methods or if the prosecution cannot prove that it was lawfully obtained.

The development of the exclusionary rule was driven by the notorious “bloody confession” (xuexing gongci) problem, exemplified by cases such as the She Xianglin case (1994–2005) and the Zhao Zuohai case (2002–2010), in which innocent individuals were wrongfully convicted and sentenced to long prison terms (and in She Xianglin’s case, to death with a suspended sentence) on the basis of confessions extracted through torture. These cases became national scandals and catalysed the 2012 reforms. In 2017, the SPC and SPP jointly issued the Provisions on the Exclusion of Illegally Obtained Evidence (Guanyu banli xingshi anli yifa shouji zhengju ruogan wenti de guiding), which substantially expanded the scope of the exclusionary rule. The 2017 Provisions clarify that evidence obtained through illegal methods that violate the defendant’s right to counsel, the right to remain silent, or other fundamental procedural rights may be excluded, and they extend the exclusionary rule to certain categories of physical and documentary evidence obtained through serious procedural violations.

Implementation Challenges and the Exclusionary Rule in Practice

Despite the progressive expansion of the exclusionary rule in legislation and judicial interpretation, its implementation in practice remains inconsistent. Empirical studies of Chinese criminal procedure have documented several persistent obstacles: (1) investigative resistance — police and prosecutors, whose performance is evaluated based on conviction rates and case closure statistics, have institutional incentives to resist the exclusion of evidence; (2) judicial reluctance — trial judges, who coordinate closely with the procuracy and police within the “tripartite division of labour with mutual cooperation and mutual restraint” framework (san ji fen gong, peihe, yue), are often reluctant to exclude evidence that would undermine the prosecution’s case; (3) narrow interpretation — courts sometimes interpret the exclusionary provisions narrowly, requiring the defence to provide specific evidence of torture before the court will initiate the review procedure, in tension with Article 57’s allocation of the burden of proof; (4) the problem of “appropriate handling” — in certain politically sensitive cases, courts may bypass the exclusionary procedure entirely or admit excluded evidence through informal channels; and (5) limited defence capacity — the defence lawyer’s right to collect evidence is restricted, and defence counsel who aggressively challenge police evidence collection practices may face professional repercussions. The 2018 amendment to the CPL made progress on electronic evidence rules but did not fundamentally address these implementation challenges.

Expert Evidence and Forensic Authentication

Expert evidence in Chinese criminal procedure is governed by the 2005 Decision of the Standing Committee of the National People’s Congress on Identification Management (Guanyu sifa jianding guanli wenti de jueding), which established a unified system for the regulation of judicial authentication (sifa jianding). Forensic institutions are independent of the judicial organs (a key reform replacing the previous system under which police, prosecutors, and courts operated their own forensic departments), and experts must be accredited through a national system of qualifications. Expert opinions are commissioned by the investigative agencies, the procuracy, the court, or, upon application by the defence, by the court. The defence has the right to challenge an expert opinion and to request the appearance of the expert for cross-examination at trial. The SPC’s 2010 Evidence Rules for Death Penalty Cases established detailed criteria for the evaluation of expert opinions, requiring that the qualifications of the expert, the scientific basis of the examination, and the procedural compliance of the examination process be scrutinised. The quality and reliability of forensic evidence remain variable, with concerns about inadequate training, insufficient resourcing, and the absence of a robust peer review culture in Chinese forensic institutions.

Electronic Evidence Rules

The 2012 CPL amendments explicitly recognised electronic data (dianzi shuju) as a distinct category of evidence, reflecting the growing importance of digital evidence in modern criminal investigations including mobile phone records, text messages, emails, social media communications, and computer forensic data. The 2018 amendments to the CPL further elaborated the rules governing electronic evidence, requiring that electronic data be collected, preserved, and examined in accordance with technical standards and legal procedures. The SPC, SPP, and Ministry of Public Security jointly issued the Rules on Collecting, Preserving, and Examining Electronic Data in Criminal Cases in 2016, providing detailed procedural requirements for the seizure and examination of electronic devices, the extraction of data, the preservation of original media, and the authentication of electronic evidence at trial. The rules address the challenges of cloud computing, encrypted communications, and remote server data, and they require the creation of an unbroken chain of custody for electronic evidence. The authenticity of electronic data is presumptively established when the data have been collected and preserved in accordance with the prescribed technical standards, but the defence retains the right to challenge authenticity.