The invention relates to a point gate automatic stripping mechanism which comprises a mold core fixing plate, a pouring gate plate and a fixed die plate. A limiting pull rod is arranged on the pouringgate plate; the tail end of the limiting pull rod is fixed to the fixed die plate; a material coagulation space is arranged between the pouring gate plate and the fixed die plate; a material coagulation concave opening is formed in the position, corresponding to a glue inlet of the material coagulation space, of the rear side of the pouring gate plate; the mold core fixing plate is also fixedly provided with a spherical pulling rod; the spherical pulling rod passes through the pouring gate plate, and the tail end is exposed at the material coagulation concave opening in the pouring gate plate; and a side concave part is further arranged at the position, located on the upper rear side of a glue outlet of the material coagulation space, of the fixed die plate. By means of the point gate automatic stripping mechanism, material coagulation is carried out through a pouring gate of a pull-break point of the side concave part in the fixed die plate, a pouring gate hard material is pulled outthrough the spherical pulling rod and is then pulled out through the pouring gate plate, the point gate automatic stripping design is adopted, automatic pull break of plastic parts and glue joint coagulation materials can be realized, the movement program of a die is reduced, the manual operation is reduced, the automation degree of production is improved, and the productivity is increased.