Dual-staging discharge-type plastic particle-out extruding machine shall be designed into tshaped or parallelshaped structure,which is widely applicable to various plastic such as HDPE,LDPE,PP,PS and ABS etc,the design include air discharge uint so as to discharge the gas created after material was heated,such that particle shall be made more full,durable and smooth,mold shall be designed with hydraulic elevation fast-replacing filtering mesh(without any shutdown while operation),featuring much greater improment for productivity.