Toenail crevice is very smelly including hygiene factors and disease factors, usually caused by foot cleaning and hygiene is not in place more common, in general, do a good job of foot cleaning, maintain good hygiene habits can avoid the occurrence of this situation. Cause toenail seam very smelly usually consider the following reasons: a, hygiene factors: toenail not regularly trimmed, usually wash feet may be difficult to clean toenail seam, a long time will lead to a large number of human dead skin, fungus or dust accumulation in the toenail seam, producing odor. Daily life should pay attention to personal hygiene, regular trimming of toenails, diligent foot washing, diligent change of shoes and socks. The fungus in the process of reproduction can break down the small skin of the nail to form a yellow mud-like substance accompanied by obvious bad odor, if the hospital examination results are fungal infection, you can follow medical advice oral drugs such as terbinafine, itraconazole, etc., joint local application of clotrimazole cream, miconazole cream, etc. to kill the fungus; 2, nail infection: nail infection is usually caused by When the toenails are too long, the toenails are not sufficiently cleaned, and too many bacteria accumulate to give off a bad smell. This can be topical anti-bacterial drugs, such as mupirocin ointment, fusidic acid cream, etc.; 3, sweat: If the cleaning is not in place, wearing breathable shoes, when the toenail seam sweat impregnated skin stratum corneum can also produce odor, this local can be appropriate to use formaldehyde solution, alum solution soak feet, or anti-sweat gel beads, spray, etc. to inhibit sweat secretion, can relieve the toenail seam odor.