The invention relates to a traditional Chinese medicine filter pressing tank which comprises an upper tank and a lower tank, wherein the upper tank takes the shape of a column; the lower tank is connected with the upper tank in match; an annular top plate is arranged at the top end of the upper tank; a through hole is formed right in the center of the top plate; a columnar inner container which is coaxial with the upper tank is fixedly connected with the lower end of the top plate; the upper end of the columnar inner container is opened; a plurality of filtering holes are formed in the side wall of the inner container; a dreg falling hole is formed right in the center of the bottom wall of the inner container; an annular boss surrounding the dreg falling hole is arranged on one side close to the through hole, of the bottom wall of the inner container; an elastic filtering net cover is fixedly connected with the boss; a sealing plate is arranged at the upper end of the filtering net cover; a dreg inlet from which traditional Chinese medicine dregs are fed is formed in the sealing plate; a sealing cover is connected with the dreg inlet in match; a pressing rack which is moved up and down along the through hole is fixedly connected with the upper end of the sealing plate; the upper end of the lower tank is opened; a decoction discharge hole is formed in the lower end of the lower tank; an inverted U-shaped bracket is arranged on the inner wall of the lower tank; a support column is arranged at one end close to the upper tank, of the bracket; a blocking plate which is connected with the dreg falling hole in match is arranged at the upper end of the support column.