Not cutting the nails too short or too deep can prevent the occurrence of onychomycosis. Inflammation of the skin tissues around the fingernails (toes) caused by tiny traumas around the nails or embedded nails, combined with pathogenic microbial infections, mainly manifested as pain and swelling. If you cut your nails too short or too deep in the process of nail cutting, in the absence of nail protection, activities such as touching hard objects or friction lead to separation of the nail bed and nail plate, bacterial invasion will be secondary to inguinitis, so you can not trim your nails too short or too deep. In addition, in daily life, pay attention to not tearing reverse peeling, i.e., inverted spurs, and also avoid biting nails or wearing tight shoes and socks, etc., the above methods can also prevent the occurrence of onychomycosis. It is recommended that patients with suspected symptoms of onychomycosis should go to regular hospitals in time, and receive standardized treatment under the guidance of specialists after a clear diagnosis, so as to avoid delaying the condition.