Abstract：With the advancement of the criminal reform in China, lawyer's procedural defense has a unique operation mode, and also has
an independent goal different from other forms of defense.However, this form of defense has also been caught in a dilemma in
the judicial practice.Many reasons lead to the fact that it is difficult for procedural defense to achieve the desired
results, such as, the unclear definition of illegal evidence, subordinate position of procedural justice, the monopoly of
procurator in evidence resource and the lack of relevant evidence rules.Although lawyers have been actively exploring the
system, they still live in the cracks of the system and hardly get rid of difficulties.Only when we carry out the
comprehensive criminal judicial reform, can we provide the basic space of system for procedural defense.
2017, 
