In a manufacturing method of a fluid control apparatus, a valve integrally formed with a valve shaft is assembled inside a housing. First and second bearing members are assembled inside the housing by inserting each of the first and second bearing members into a corresponding space between the housing and the valve shaft from a corresponding longitudinal end side of the valve shaft. A longitudinal position of the valve relative to the housing is adjusted through one of the following methods. A first contact portion is brought into contact with a first side face, and a second contact portion is brought into contact with a second side face. A first contact surface is brought into contact with a first longitudinal end face, and a second contact surface is brought into contact with a second longitudinal end face.