The invention belongs to the technical field of chemical equipment and discloses a polytetrafluoroethylene dispersion resin polymerization automatic application device. The polytetrafluoroethylene dispersion resin polymerization automatic application device is provided with a single body groove; the upper end of the single body groove communicates with a single body adsorber through a pipeline; the single body adsorber communicates with a reaction kettle through a single body filter; the reaction kettle communicates with a dispersion liquid filtering groove through a reaction kettle discharging cutoff valve; and the dispersion liquid filtering groove communicates with a PTFE aftertreatment pipe network through a filtering groove discharging cutoff valve. The polytetrafluoroethylene dispersion resin polymerization automatic application device aims to propel automatic control on PTFE dispersion resin polymerization, improve the accuracy degree, the precision degree and the sensitivity ofautomatic production and measurement and reduce random error of manual operation; the original pressure drop manual timing operation is replaced by application of a polymerization automatic technology, so that the uniformity of molecular weight distribution is promoted and the product quality of the PTFE dispersion resin is finally improved; meanwhile, the labor intensity is reduced, the cost isreduced, the benefit is increased, an enterprise development is driven and economic benefits of enterprises is increased.