This chapter explores whether exclusionary rules serve as efficient tools to streamline criminal procedure in a way that safeguards the rights of an accused or whether they exist merely as law on the books with limited actual utility. Relevant benchmarks for the evaluation of exclusionary rules are discussed, in addition to their structure. The question of which characteristics of exclusionary rules optimize the protection of procedural rights is analyzed along with other options to prevent violations. Possible alternatives to exclusionary rules are suggested to help answer the question: Is it time for a change? 1 Exclusionary Rules-Efficient Tools or Illusory Giants (紙老虎)? Exclusionary rules have long been a topic of interest for legal scholars and the subject of comprehensive study in law journals and textbooks. 1 The concept originated in common law and was later adopted by civil law and so-called mixed systems and, most recently, in China. 2 In the Western world, exclusionary rules are featured in flashy criminal cases, detective novels, and movies.