The invention discloses a walnut oil squeezing device and squeezing method. The squeezing device comprises a support, an oil squeezing cylinder, a pressure head assembly, oil squeezing oil cylinders,a supporting plate, a supporting oil cylinder, an oil receiving sleeve and an oil storage tank; the oil receiving sleeve is installed on the support, the oil squeezing cylinder is arranged in the oilreceiving sleeve, the pressure head assembly is connected to one ends of the oil squeezing oil cylinders, and the oil squeezing oil cylinders drive the pressure head assembly to move in the oil squeezing cylinder, the supporting plate is connected to one end of the supporting oil cylinder, the supporting oil cylinder drives the supporting plate to abut against the lower end of the oil squeezing cylinder, and the oil storage tank communicates with the lower end of the oil receiving sleeve through an oil outlet pipe; and the pressure head assembly comprises an inner pressure head and an outer pressure ring, wherein the outer pressure ring sleeves the outer side of the inner pressure head, the plurality of oil squeezing oil cylinders are arranged, and the inner pressure head and the outer pressure ring are connected with the oil squeezing oil cylinders correspondingly. According to the walnut oil squeezing device and squeezing method, the problem that an existing static force squeezing machine is incomplete in oil outlet is solved.