The mild initial symptoms of Kawasaki disease can be manifested as fever, conjunctivitis, mucositis, and rash. 1. Fever: elevated body temperature is the most common manifestation. The patient’s temperature usually stays above 38.5℃, the use of antipyretics is not effective, and the presence of unexplained prolonged fever (≥5 days) should be considered. 2. Conjunctivitis: Bilateral non-exudative conjunctivitis is present in more than 90% of patients. Bulbar conjunctival congestion manifests as bright redness and photophobia. In addition, some patients are prone to uveitis. 3. Mucositis: The manifestations of oral mucositis can be seen alone, usually mild, the obvious may appear chapped red lips and strawberry tongue. In addition, there can be blisters or ulcers and other scattered lesions in the oral cavity. 4. Rash: The skin manifestations are polymorphic, and the rash usually appears in the first few days after the onset of the disease, usually manifested as redness of the perineum and skin flaking, followed by maculopapular, measles-like or target-like lesions on the trunk and limbs. If the above clinical symptoms appear, you should be alerted to the occurrence of this disease, and it is recommended to seek medical treatment as soon as possible to avoid delaying the disease.