The invention discloses an electric cabinet door locking structure. The electric cabinet door locking structure comprises a cabinet door and a fixed piece; a square groove is formed in the cabinet door; a swing piece is movably arranged in the groove; the fixed piece is arranged on the swing piece; and a spring for pushing the swing piece to steer to the other corresponding inner side wall of the groove is arranged between one inner side wall of the groove and the swing piece. The electric cabinet door locking structure is simple in structure and easy to operate.