Nursing bed side guardrail with automatic folding function

The utility model discloses a nursing bed side guardrail with an automatic folding function, which is characterized in that a plurality of symmetrical support rods are rotatably connected to two sides of a bed body, lifting rods are sleeved on the outer sides of the support rods, handrails are rotatably connected to the upper ends of the lifting rods, and lifting components are arranged on the handrails to drive the lifting rods to lift. A connecting shaft is fixedly connected between the opposite faces of the supporting rods on the foremost side, the connecting shaft is driven by a rotating assembly, and during working, the length of the portions, located on the supporting rods, of the lifting rods can be adjusted through the lifting assembly, so that the function of adjusting the height of the guardrail is achieved; and the situation that the supporting rods are overlapped together during folding can be avoided, the supporting rods can be rotated through the arrangement of the rotating assemblies, the purpo