Manufacturing method of pressure sensor

The invention provides a manufacturing method of a pressure sensor. The method comprises the steps of obtaining an elastic steel plate meeting thickness requirements, coating adhesive glue on the first plate surface of the steel plate and the metal foil; stacking the metal foil and the first panel rubber surface of the elastic steel plate together in a manner of facing the rubber surface; extruding the elastic steel plate and the metal foil; bonding the elastic steel plate and the metal foil together, machining a plurality of blind holes in a second panel of the elastic steel plate, etching the metal foil on the first panel into a plurality of Wheatstone bridges, cutting the elastic steel plate in the direction parallel to the axis of the blind holes, wherein the boundary dimension of theelastic steel plate is larger than the dimension of the blind holes, and obtaining a plurality of pressure sensors. Adhesive glue is coated on an elastic steel plate and a metal foil at one time, andthe adhesive glue is unifo