(1) Keep the cast clean to prevent impregnation and contamination by water, urine and feces. (2) Keep the cast intact: do not press the cast or place the affected limb fixed with the cast on hard objects to prevent depression and compression of the skin. When elevating the affected limb, hold the main joint to prevent the cast from breaking due to joint movement. (3) Elevate the affected limb: After the cast is fixed, the affected limb should be kept above the level of the heart, which is conducive to venous and lymphatic fluid return and reduces the swelling of the limb. (4) Observe the circulation and nerve function of the limb: if there is pain or throbbing pain or numbness in the fixed limb, along with cyanosis, decreased temperature and swelling of the limb, it may indicate impaired blood circulation. Prompt medical attention should be sought and the cast should be removed immediately if necessary. When there is limited pain within the cast, prompt medical consultation should also be sought to prevent localized cast pressure injury. (5) After the plaster dries, it should be prevented from breaking, and after the plaster is completely dry and solid, it should be padded with a soft pillow according to its concave and convex shape. (6) Pay attention to functional exercise. Joints that are not immobilized by the cast need to be strengthened to move. Even for the limbs wrapped in casts, muscle contraction exercises should be practiced in compliance with the doctor’s requirements.