Fungi are not generally killed in vinegar, and it has nothing to do with the length of time. As a matter of fact, vinegar does have some inhibiting effect on fungal activity, but the effect is very weak, its because although the main component of vinegar is glacial acetic acid which has some fungicidal effect, but the concentration is very low, and it can hardly play a real killing effect on fungus. In addition, the concentration of glacial acetic acid is also very difficult to control, if the concentration is too high, its irritation will also increase, skin contact is easy to cause contact dermatitis, but will aggravate the disease. Therefore, it is generally not clinically recommended to use vinegar soak to kill the fungus. Under normal circumstances, if the body is determined to be fungal infection, the superficial part is preferred to local antifungal drug treatment, such as miconazole cream, ketoconazole cream, miconazole nitrate cream, etc., which is safe and effective; if the fungal infection is more serious, oral antifungal drug treatment can also be used, such as terbinafine, itraconazole capsules, fluconazole, etc. In addition, if it is deep fungal infection, once the foci of infection are formed, if conservative treatment is not effective, surgical treatment should be considered. In short, the fungus is difficult to be killed in vinegar, so patients need to go to the dermatology department of the hospital for standardized treatment in time, and actively treat the original disease.