A glue box push-out device of a hard capsule gluing sealing machine is applied to a hard capsule filling machine and comprises a gluing support (1) and a glue box (34), the gluing support (1) is arranged on a telescopic rod (21), and the telescopic rod (21) is connected with a feeding air cylinder (33). The gluing support (1) is provided with a glue scraping device (35) through a push rod (18). The feeding air cylinder drives the telescopic rod, so the gluing support and the glue box and gluing wheels in the gluing support move outwards respectively, and feeding or cleaning of the glue box is facilitated. Residual glue on the gluing wheels is scraped through the glue scraping device, an annular glue zone can be formed on a hard capsule rapidly and automatically, and the hard capsule is firmly bonded and has good seal performance. Thus, the preservation and service time of the capsule is prolonged, and effects of medicine are guaranteed.