The invention discloses a rapid molding apparatus. The apparatus comprises a box body, the bottom of the box body is provided with a printing panel which can lift along the Z axis, a printing head and a moving mechanism for driving the printing head to move along the X axis and the Y axis are arranged above the printing panel in the box body, the printing head is detachably arranged on the moving mechanism, and the top of the box body is provided with an opening for the printing panel to lift out of the box body, and a movable skylight for shielding the opening. The printing head is detachably arranged on the moving mechanism, so a user can select a corresponding print head as required, so the printing of a variety of materials is realized, and the applicability is strong; the printing panel is paved with a silica gel membrane, and the lifting mechanism can automatically send products out of the box body after printing is completed, so the products can be very conveniently taken from the work panel; and the shell of the printing head is clamped and fixed to a fixing piece, and is detachably mounted on an Y-axial slide rail, so the user can replace the printing head as needed, and the applicability is strong.