The invention discloses a manufacturing method of a high-precision washing head, and relates to the technical field of washing head manufacturing. The manufacturing method comprises the steps of 1, manufacturing a fixed part of the washing head; 2, manufacturing a movable part of the washing head; 3, assembling the washing head; and 4, building a removable control circuit of the washing head. According to the manufacturing method of the high-precision washing head, the fixed part and the movable part of the washing head are integrally formed through die machining, then are machined again through a punching machine, a welding machine and the like, and finally are assembled into an integrated structure to obtain the novel washing head with high precision; the finished product of the washinghead is flexible in structure, has certain ability to move and can be automatically adjusted to an optimal position; and the obtained finished product of the washing head can offset the possible stress in working, so that the service life is long.