Lifting system of surgical bed

The invention provides a lifting system of a surgical bed. The lifting system comprises a cylinder base, a guide rail, sliding bearings, a support plate and a hydraulic cylinder. The guide rail is fixedly mounted on a side surface of the cylinder base, the sliding bearings are slidably mounted on the guide rail, the support plate is fixedly mounted on the sliding bearings, and the hydraulic cylinder is fixedly mounted on the cylinder base. The lifting system has the advantages that the lifting system is simple in structure, convenient to use and high in speed, a lifting function of the surgical bed can be controlled via control buttons, and excellent stability of a surgical table can be kept owing to a locking function of the hydraulic cylinder; the lifting system is good in directivity and high in bearing capacity, and is applicable to patients with various weights and surgery with various high operation requirements.