The invention discloses a universal vacuum clamp for optical element polishing and belongs to the technical field of optical cold machining. The universal vacuum clamp aims to solve the problems that in the prior art, the structure is complicated, the universality is poor and machining cost is high. The universal vacuum clamp for optical element polishing comprises a vacuum clamp body and a sealing protective layer. The vacuum clamp body is of an integrated structure and comprises a hollow structure which is formed through a supporting arm. The upper end of the supporting arm makes contact with an optical element to be polished. The position where the upper end of the supporting arm makes contact with the optical element to be polished is sealed through the sealing protective layer. The hollow structure is communicated with the outside through an air suction hole. According to the universal vacuum clamp for optical element polishing, the upper end of the supporting arm makes contact with the optical element so that the clamp can be suitable for clamping planar, spherical and aspheric optical elements of different sizes and different shapes; the clamp is simple in structure and high in universality.