Pediatric thinness may be caused by heredity, which is a normal phenomenon, it may also be caused by zinc deficiency, and may be caused by some diseases, such as ascariasis, etc., for different reasons, different treatment methods. 1. Physiological factors: If the child’s parents are also thin, then the child’s thinness may be inherited from the parents, which is a normal phenomenon, pay attention to the dietary nutritional balance on weekdays. 2. Zinc deficiency: children’s thinness may also be caused by zinc deficiency, often accompanied by decreased appetite, indigestion, etc., children eat less, which leads to children’s thinness. You can follow the doctor’s instructions to give the child oral zinc gluconate oral solution and other drugs for treatment, in addition to the need to pay attention to balanced dietary intake of nutrients. 3. Ascariasis: Ascariasis is a chronic infectious disease caused by roundworm parasites in the small intestine or other organs. Children infected with roundworms may have symptoms such as loss of appetite, abdominal pain and discomfort, and thinness, etc. In this case, deworming treatment is needed, such as taking albendazole and other drugs under the guidance of the doctor for treatment. In addition to the above factors, other diseases such as tuberculosis may also cause pediatric thinness, it is recommended to seek medical attention as soon as possible, to the regular hospital to identify the causes, so as not to delay the condition.