The invention relates to the technical field of building interior decoration, and discloses a uniform glue discharging device of a glue gun. The uniform glue discharging device comprises a switch disc, wherein a gear ring is fixedly connected to the surface of the switch disc, a clamping groove is formed in the surface of the switch disc, a through hole is formed in the surface of the switch disc,a pipeline is arranged on the inner side of the through hole, a counting wheel is rotatably connected to the surface of the pipeline, a matching column is fixedly connected to the outer side of the counting wheel, an intermittent wheel is arranged on the lower side of the counting wheel, and a spring groove is formed in the surface of the intermittent wheel. According to the uniform glue discharging device of the glue gun, the switch disc, the gear ring, the clamping groove, the through hole, the pipeline, the counting wheel, the matching column, the intermittent wheel, a matching block, a spring, a small transmission gear, a large transmission gear, a clamping block, a movable plate, a connecting rod, a balance rod and a trigger are used cooperatively, so that the amount of glue which issprayed by pressing the trigger each time is the same, and the effect of uniformly spraying the glue is achieved by continuously pressing the trigger when the glue is sprayed.