Abstract: First of all,give a comprehensive overview of oil-free scroll compressor’s history and current situation,Later,introduce the working principle and composition of oil-free scroll compressor.Make a overview of oil-free scroll compressor’s key technologies,which include seal and lubrication,cooling system and anti-rotation.Have a systematic induction to solve the key technical issues of oil-free scroll compressor and propose an extension of the key technologies to expand.Through a comprehensive analysis of oil-free scroll compressor,Making a detailed outlook of the oil-free scroll compressor’s development prospects,giving views to broaden the application field of oil-free scroll compressor,.Indicate the complementary relationships of proton exchange membrane fuel cell technology and oil-free scroll compressor.