The invention discloses an automatic filter pressing system and application thereof. The automatic filter pressing system comprises a feed tank, a delivery pump, a filter press, a pressure gage, a flowmeter, a filtrate tank and a controller. According to the automatic filter pressing system, analysis and comparison processing is performed on concentration, viscosity and particle size of slurry and parameters of the pressure gage and the flowmeter by utilizing the controller to control the feed rate of the filter press and opening of a filtrate outlet, so that the feed rate and filter pressing treatment of the filter press are automatically regulated, and therefore, the automatic filter pressing system is enabled to stably perform treatment on the slurry evenly.