The invention discloses a powder metallurgy stator of a vane steering pump and a manufacturing process thereof. The powder metallurgy stator which is reasonably selected is formed by, by weight, 1 to 2% of molybdenum powder, 2 to 4% of nickel powder, 0.5 to 1% of tungsten powder, 2 to 3% of copper powder, 0.5 to 0.8% of graphite powder, 0.5 to 0.7% of zinc stearate, 0.5 to 0.8% of molybdenum disulfide and the balance iron powder. According to the manufacturing process, the powder metallurgy stator is good in mechanical performance, long in service life, low in noise and good in flow pulsation rate, the apparent oil density of the stator is not less than 7.1 grams every cubic centimeter, the apparent hardness of the stator is not less than HRC (Rockwell Hardness) 35, the apparent tensile strength of the stator is not less than 955 MPa, the apparent impact value ak of the stator is not less than 55 kilojoules every square meter, the flow pulsation of a booster pump can be significantly improved when the stator is applied to the booster pump, the flow pulsation rate sigma is 5.1 to 5.6%, the service life of the booster pump is extended, and the working noise and the vibration amplitude of automobile parts are reduced.