The utility model discloses a rising stem brake valve travel support tool, which belongs to the technical field of machinery maintenance, and comprises a travel support sleeve and a crescent pin, wherein a rectangular groove is arranged on one end of a sleeve body of the travel support sleeve, the crescent pin is arranged in the rectangular groove, M30 screw buckles and M22 screw buckles are arranged on the circumference of the sleeve body, and a T18 trapezoidal screw buckle is arranged in an inner hole which is arranged on one end of a through hole of the sleeve body. The rising stem brake valve travel support tool is characterized in that a rising stem type valve is supported in a moving mode which is changed from a fixed mode. The rising stem brake valve travel support tool is convenient to operate and change. The rising stem brake valve travel support tool guarantees operation safety, prevents excess pressure in a valve from being released and leaked. The rising stem brake valve travel support tool is also suitable for a valve which is used for a pressure container, prevents other potential safety hazard which is caused when switching the pressure container, and guarantees use safety of the pressure container.