The invention relates to a milling force measurement technology during milling machining, in particular to a three-dimensional milling force measurement cutter system with embedded thin film sensors. The problems that an existing milling force measurement system is poor in structural stability, low in measurement precision and poor in measurement real-time performance are solved. The three-dimensional milling force measurement cutter system with the embedded thin film sensors comprises a milling cutter head, a blind rivet, a milling cutter shank, a first sunk screw, a force measurement device cover plate, a pre-tightening bolt, a cylinder head screw, thin film sensor modules, a fixing block, a second sunk screw, a cutter pad, a third sunk screw, a milling blade, a built-in circuit, a large hexagonal screw and guide lines, wherein the milling cutter shank is fixed to the upper end of the milling cutter head through the blind rivet; a round assembly hole which is vertically through is formed in the center of the surface of the force measurement device cover plate. The three-dimensional milling force measurement cutter system with the embedded thin film sensors is applicable to milling machining on various occasions like laboratories and production fields.