The invention relates to the field of lock production, in particular to a lock plug spring and lock plate assembling machine. The machine comprises a rack, a rotating table jig device, a lock plug feeding device, a spring feeding device, a locking plate feeding device, a key assembling device, a detection discharging device and a key feeding manipulator, wherein the rotating table jig device is arranged in the middle of the rack, the lock plug feeding device, the key assembling device and the detection discharging device are installed on the rack, and are located on the outer side of the rotating table jig device, the spring feeding device and the locking plate feeding device are installed at a fixed part of the rotating table jig device, and the lock plug feeding device, the spring feeding device, the key feeding manipulator, the locking plate feeding device, the key assembling device and the detection discharging device are sequentially connected in the machining direction. Accordingto the machine, jig bodies for placing a lock plug and a key are arranged in a jig at the same time, so that subsequent assembly is facilitated, a specific lock plug corresponds to a specific key, one-to-one correspondence is achieved, the lock plug feeding is positioned through a positioning strip, and the correct posture of the lock plug can be ensured.