The invention relates to a sliding mechanism which comprises a body, a sliding member, a protection cover and an elastic member, wherein the protection cover is arranged on the body; the elastic member is arranged between the sliding member and the protection cover and respectively and elastically connected with the sliding member and the protection cover; the sliding member is arranged between the protection cover and the body and can slide opposite to the body and the protection cover; the sliding member comprises a shielding part and two sliding parts arranged at two sides of the shieldingpart, wherein the sliding parts and the shielding part are an integrated body and is in bijective injection molding by adopting two different plastics; the sliding parts are made of non-electroplating plastic, and the shielding part is made of electroplating plastic and electroplated with metal layer. The sliding parts made of non-electroplating plastic has excellent sliding property.