Hair thinning on the top of the head is considered to be seborrheic alopecia, which can be treated by the following methods: first, to keep a relaxed mood, do not stay up late, do not eat high sugar, fried foods and spicy food; second, internal medication, you can take oral cystine tablets, blood nourishing hair capsule, vitamin B6 tablets, finasteride tablets, etc.; third, external medication, external use of minoxidil tincture, compound Sialdan hair growth tincture, etc.; fourth, physical therapy, helium-neon laser irradiation, seven-star needle percussion; fifth, surgical treatment, if the hair loss is more serious, hair transplantation can be performed.