The invention discloses a high-effective filter press. The filter press comprises a filter plate that is used for solid-liquid separation, a material pool which is used for storing and conveying materials to the filter plate, a filtrate pool which is used for storing filtrate flowing out of the filter plate, and a feeding hole, a first liquid discharging hole and a second liquid discharging hole that are formed in the filter plate. The material pool is communicated with the feeding hole through a feeding pipe; the first liquid discharging hole is communicated with the filtrate pool through a first liquid discharging pipe; the second liquid discharging hole is communicated with the filtrate pool through a second liquid discharging pipe; a liquid discharging switch used for controlling the first liquid discharging pipe to be opened and closed is arranged on the first liquid discharging pipe, a feeding switch used for controlling the feeding pipe to be opened and closed is arranged on thefeeding pipe, and the washing device is used for injecting washing water into the first liquid discharging hole so that the washing water can flow out of the second liquid discharging hole to the filtrate pool after passing through the filter plate. By means of the reverse washing of the filter cake, the purity of the filter cake can be greatly improved, and meanwhile, the recovery rate of filtrate can be increased, so that the material filtering effect is greatly improved.