The utility model provides a ball seat seals and separates hole fracturing string that showers more. The utility model discloses a ball seat seals and separates hole fracturing string that showers more, include: well completion sleeve pipe, perforation are managed cluster, ball seat and are dissolved the ball, be provided with spacing parts in the adjacent position department that corresponds that transforms between the layer on the well completion cover inside pipe wall, perforation pipe cluster, ball seat and dissolve the ball all to lie in the well completion cover intraductal, perforation pipe cluster is connected with the ball seat for control and delivery ball seat, the ball seat is used for holding and dissolves the ball, and the ball seat compresses tightly spacing parts in order to fix on the adjacent shutoff layer of transforming between the layer of the intraductal formation of well completion cover, wherein, dissolve the ball meet water reach the time of presetting after just dissoluble. The utility model discloses not need with the drill bit with ball seat on the shutoff layer with dissolve the round bur and remove, stopped the card drill damage sheathed tube condition. In addition, engineering time and operating expenses have still been saved.