International commercial arbitration evidential “soft laws” refer to those norms that are enacted by non-state actors, including international organization, arbitration institutions and industry organizations. Unlike state legislation and international treaty, the enforcement and application of arbitration evidential “soft laws” are based on party autonomy and tribunal’s discretion. Since the arbitration evidential “soft laws” fill the gap left by legislation and arbitration rules, harmonize the difference between the civil law jurisdiction and the common law jurisdiction and reflect the core value and features of the arbitration system, they have gained great influence among the international arbitration community. The cruxes of China’s international commercial arbitration evidence system should not be wholly attributed to the 1995 Chinese Arbitration Law. Law modification is not the only path for perfecting the arbitration evidence system. Instead, the arbitration evidential “soft laws” can also serve the purpose. The real cruxes are that some arbitration practitioners are unfamiliar with arbitration evidential “soft laws” and arbitration rules fail to guide the arbitral tribunal’s discretion power. Hence, it is suggested to improve the understanding of arbitration evidential “soft laws” and introduce separate arbitration evidential provisions in the arbitration rules when it deals with foreign-related arbitration.