The utility model provides a steam turbine stator portion cover assembly of conveniently reprocessing, it relates to a steam turbine stator portion cover assembly. Current steam turbine stator portion cover is returning the factory after locating pin on the horizontal flange of regular meeting's its baffle of discovery because of the incrustation scale corrosion makes pin and horizontal flange together, not only need occupy the lathe and take out, and it influences efficiency still to lose time. The utility model provides a pin is pinned for the target in a plurality of pins, be provided with the pin removal on the target pin, the screw rod is used including connecting to the pin removal, L shape outer thread sleeve and internal thread cover, external screw thread on the L shape outer thread sleeve outer wall is connected with the internal thread on the internal thread cover inner wall, screw rod edge L shape outer thread sleeve's length direction inserts among the L shape outer thread sleeve for the connection, connect the thread bottom hole threaded connection with screw rod bottom and pin, the plectane level sets up the top at the sleeve body, there is the through -hole at the center of plectane along the thick direction processing of its board, the screw rod passes this through -hole for the connection. The utility model is used for among the steam turbine unit.