In order to provide essential data for aircraft designing, loading test and environmental performance test on PEEK clamp, both in P and saddle type, were finished. The effects on product properties after vibration, impact, temperature age, liquid immersion, humidity and salt were discussed. The direction that the most easily to damage in and the fracture load values in different installation angle and environmental temperature was obtained.It is shown that the tensile property of PEEK clamp is stable at room temperature.The clamp is easily broken in glue in hot and humid environment.The PEEK clamp can keep complete structure and stable perfonnance under the environmental load such as vibration, impact, and temperature aging and can replace metal clamp in certain conditions.