Zinc is one of the essential trace elements and is widely present in various cells. It is the most abundant trace element in cells and a key component of more than 100 enzymes, participating in the synthesis of DNA, RNA and proteins and various metabolic activities of the body. According to statistics, the incidence of zinc deficiency is as high as 50%. Zinc deficiency can cause: 1) growth retardation in children; 2) low immunity; 3) decreased appetite; 4) skin infections and endocrine disorders. Children with cerebral palsy are more likely to suffer from zinc deficiency due to their special physical development, and the effects of zinc deficiency on children with cerebral palsy can be greater. The common effects include: 1) slow progress in rehabilitation; 2) poor physical condition and susceptibility to recurrent respiratory infections during rehabilitation; 3) easy fright and lack of cooperation during treatment; and 4) impact on the child’s appetite and mental state. In case of zinc deficiency, the first thing to do is to adjust the diet: eat foods rich in zinc, such as animal liver, fish, lean meat, eggs, oysters and colostrum; in addition, some elemental zinc can be supplemented, commonly used is zinc gluconate, the dosage is 1-2ml/kg, and in general, it should be supplemented for 2-3 months.