Common early symptoms of rheumatic diseases in children are as follows: 1. long-term fever, children with unexplained fever, the application of antibiotic treatment is ineffective, and the fever can last for a long time; 2. skin damage, mainly manifested as a skin rash, some children’s rash manifested as papules, some children’s rash manifested as urticaria, some children’s rash manifested as erythema multiforme; 3. joint damage, due to different rheumatic diseases, the degree of joint damage in children is not the same; 4. multi-organ damage.