For children with persistent low fever after high fever, the following measures can be used to deal with the situation: 1. Continue anti-infection treatment, some children have persistent low fever after high fever because the infection is not completely controlled, continue to apply cephalosporin and other anti-infection drugs to children, the infection will be completely controlled after the low fever will naturally subside. 2. The persistent low fever after high fever in some children is caused by internal heat of yin deficiency, which is often accompanied by dry mouth, red tongue, little tongue coating and fine pulse.