The invention relates to a quick test system for CRDM (Control Rod Drive Mechanism) claw performances. The system comprises a rack assembly, an operating unit and a control unit, wherein the operatingunit and the control unit are arranged on the rack assembly; the operating unit comprises a driving part which is connected to the rack assembly, a connecting rod of which one end is connected to thedriving part, a testing kettle assembly and a simulating assembly; the testing kettle assembly comprises a kettle body; the other end of the connecting rod passes through the kettle body; the simulating part is arranged in the kettle body; a claw sample is correspondingly connected to or matched with the other end part of the connecting rod and the simulating part. The system is used for testingthe claw only, is high in adaptability, is space and time saving, reduces cost, and is high in pertinence and capable of quickly and efficiently testing the claw performances.