Children’s alopecia areata spots can be determined by clinical manifestations, direct microscopic examination of fungi, and trichoscopic examination to determine whether it is tinea capitis. 1. Clinical manifestations: ringworm of the head can be divided into four types, yellow ringworm lesions at the yellowish red spots, there are flaky scales, can form around the periphery of the warped yellowish scab; white ringworm at the cluster of red pimples, expanding in all directions, with grayish white scales. Black spot ringworm when the hair just out of the scalp broken, in the hair follicle mouth with black spot-like stumps; pustular ringworm can be in the surface of the hair follicle mouth to form a honeycomb pus discharge small holes, can be squeezed out of the pus. 2. direct microscopic examination of fungi: tinea albicans can be seen outside the hair in heaps of small round spores; tinea cruris can be seen inside the hair with chain-like hyphae and arthrospores, and there are thick-walled spores and antler-like hyphae inside the scabs; tinea cruris can be seen in the chain-like arrangement of round spores. 3. Trichoscopy: identification through the affected hair folded hair, black spots and other changes. Children with alopecia areata spots, parents should be brought to the hospital specialists in time, the cause of the symptomatic treatment, in order to prevent baldness and scarring.