Sweating and soreness on the soles of the feet may be related to excessive sweating, or fungal infections, as follows. 1. Sweating: the sweat glands on the soles of the feet are more abundant, and sweat gland secretion is more vigorous. And sweat has a small amount of lactic acid and fatty acids in the bacterial fermentation to produce odor. If there are more of these substances in the sweat, the odor of sweat will be more obvious. 2. Fungal infections: such as tinea pedis. If the fungus resides in the skin of the soles of the feet, metabolism, decomposition, proliferation and other processes will occur. Among them, it will decompose the skin stratum corneum, and in the process of decomposition will be accompanied by volatile gases, the formation of obvious sour odor. It is recommended to maintain foot hygiene in daily life, shoes and socks should be changed and cleaned diligently, and choose shoes with better permeability. If there is a fungal infection in the feet, it is recommended to use medication under the guidance of a doctor, common topical antifungal drugs are miconazole, terbinafine and so on.