The invention discloses an improved coating molding apparatus, which includes a housing and an engagement portion for cooperating with the housing, a first sliding cavity is arranged in the top end face of the housing, a sliding frame is arranged in sliding fit in the first sliding cavity, a lift device is dynamically fitted and installed in the bottom end of the sliding frame, a first insertion cavity in insert fit with the engagement portion is arranged between the inside of the left end face of the housing and the first sliding cavity in a communicating manner, a second insertion cavity isarranged in the left end face of the sliding frame opposite to the first insertion cavity, a clamping cavity is arranged in that top wall of the second insertion cavity, and an opening and closing plate protruding into the second insertion cavity is rotatably fitted and installed in the clamping cavity, a first elastic strip is fixedly arranged between the opening and closing plate and the top wall of the clamping cavity, and a clamping block is fixedly arranged on the top wall of the clamping cavity on the right side of the first elastic strip.