We have development the third generation of jacquard weaving machine-PTHD computer controlled jacquard weaving machine ,in which micro-computer controlling technology is applied to replace lag controlling technology. microcomputer proguamming software is applied to replace log boring design and production technology. Various technology and performance in dexes of the product have showed that it has reached the advanced international level and occupied the leading position in China. cumputer controlled jacuard weaving machine has the advances of strong adaptability high effciency,easiness of pattern design,production and revision and simplicity of presservation.