The invention discloses an automatic clamping device for electroplated parts. The automatic clamping device comprises a rack, a rotating mechanism arranged on the rack, a lifting mechanism arranged on the rotating mechanism and a pair of clamping arms arranged on the lifting mechanism in a swinging manner, wherein each clamping arm is provided with a clamp driving mechanism and a clamp; each clamp comprises a pair of holding arms; and each clamp driving mechanism drives the corresponding pair of holding arms to perform approaching or departing linear motion to control opening and closing of the jaw of the corresponding clamp so as to perform clamping. The automatic clamping device can replace people to take and place the electroplated parts of various specifications, and is high in electroplating efficiency.