There are differences in the structure of the swirls on the top of the head and other parts of the scalp, where the hair itself is relatively small. Secondly, it may also be caused by androgenetic alopecia and other diseases, it is recommended that patients take general treatment, medication and other ways to improve. 1. Physiological factors: the structure of the top of the head at the vortex is more special, the hair in this part of the head due to the spiral distribution, so visually it will feel less hair compared to other parts of the head, which is a normal phenomenon, usually without special treatment. 2. Androgenetic alopecia: androgenetic alopecia may lead to hair thinning at the top of the head whirlpool, patients should pay attention to develop good habits. Male patients need to follow the doctor’s prescription oral finasteride, female patients need to follow the doctor’s prescription oral spironolactone, combined with topical minoxidil tincture and other drugs, can help alleviate the symptoms of local hair loss. There are many reasons for hair thinning at the top of the head whirlpool, after excluding physiological factors, it is recommended that patients seek medical examination to clarify the cause, and cooperate with the doctor for standardized treatment.