The invention discloses improved type sewage treatment equipment. The improved type sewage treatment equipment comprises a treatment main seat and a mounting assembly which is fixed on a wall body andis used for being in matched connection with the treatment main seat, wherein a mounting sinking groove is formed in the end surface of the right side of the treatment main seat; an inclined surfaceis arranged in the circumferential direction of the tail end of the right side of the mounting sinking groove; a first locking cavity which is upward extended is formed in the inner top wall of the mounting sinking groove; a second locking cavity which is downward extended is formed in the inner bottom wall of the mounting sinking groove; a sliding groove which is extended upward and downward is formed in the treatment main seat at the rear side of the mounting sinking groove; a first communicating groove is formed in the part between the top extended section of the sliding groove and the topextended section of the first locking cavity in a communicated mode; a second communicating groove is formed in the part between the bottom extended section of the sliding groove and the bottom extended section of the second locking cavity in a communicated mode; and a sliding plate is connected with the interior of the sliding groove in a mode of sliding fit.