If the possibility of skin disease and moulting period is ruled out, then the severe hair loss of the French Bulldog is most likely caused by a salty diet, frequent bathing, excessive mites, etc. Therefore, it is best for the owner to reduce the frequency of bathing it, preferably once a month, to avoid damage to the hair follicles. Moreover, it is necessary to adjust its diet structure, reduce the intake of meat, keep it light and less salt, increase the proportion of vegetables and fruits, and often take the French cow out to bask in the sun, which can sterilize and promote hair growth. And you must do regular internal and external deworming, especially the breeding of parasites such as mites, which can easily lead to skin diseases and patchy hair loss.