The symptoms of leg cramps in children are most likely caused by calcium deficiency, but may also be due to excessive exercise, muscle spasms due to muscle strain, etc. If the child does not sleep well at night, easily wakes up at night, and is particularly prone to sweating, especially head sweating, plus the child’s leg cramps, there are obvious calcium circles or bone development deformities, this situation is generally considered to be related to calcium deficiency, it is recommended to timely supplement calcium tablets and cod liver oil, usually must eat more calcium-rich food, more sunshine. If your child has leg cramps at night because of strenuous exercise during the day, this is generally due to excessive exercise or improper exercise caused by muscle spasms, it is recommended that you can give your child a hot compress on the legs, do massage, pay attention to rest, and generally after a few minutes should be able to significantly improve. The child should be able to get better after a few minutes. In short, if the child has leg cramps, parents should not worry too much, timely calcium supplementation for children and avoid strenuous exercise is very critical.