The utility model discloses a tee bend pipeline valve, including the inside valve body that is equipped with the valve pocket, case and actuating mechanism, the valve pocket is stop chamber and back stop chamber before the divided of front and back, valve body back -end is equipped with fluid entry and first fluid export, the front end of valve body is equipped with the second fluid export, the runner that switches on around case inside has, preceding stop intracavity is equipped with sealing ring, the sealing ring periphery is equipped with through flow opening, the middle part be equipped with can with runner complex sealing, during the extremely back stop of moving spool valve, the front end and the hermetic unit of runner leave, thereby the rear end of runner switches on fluid entry and second fluid export with the butt joint of fluid entry, block the first fluid export simultaneously, when moving spool valve arrives preceding stop, thereby the rear end of runner switches on the fluid entry with the separation of fluid entry and first fluid exports, and the second fluid export is blocked to the front end and sealing cooperation of runner simultaneously. This tee bend pipeline valve can realize the automatic control fluidic flow direction, satisfies different occasion requirements.