Abstract: In the field of self-assembly of amphiphilic polymers, crystallization-driven self-assembly draws special attentions because of its richness in content and high mold ability.Cylindrical micelles with controllable compositions, length and distribution, which are difficult to obtain in conventional self-assembly systems, are highly available using crystallization-driven self-assembly.The crystallinity in copolymers is considered the key to the formation of cylindrical micelles and is widely studied.