Red spots on the soles of the feet may be caused by insect bite dermatitis, eczema, tinea pedis and other factors. 1. Insect bite dermatitis: insect bites on the skin of the soles of the feet may lead to localized erythema, pimples, flaking, itching and other symptoms. 2. Eczema: Heredity, chronic infection, endocrine and metabolic factors, environment and other factors lead to the onset of eczema on the soles of the feet, resulting in skin erythema, papules, papules, and the soles of the feet may appear red spots. 3. Tinea pedis: Tinea pedis is caused by fungal infection, such as sweaty feet, often wear breathable shoes, can induce fungal infection, may lead to the appearance of red spots on the soles of the feet, blisters, flaking with itching symptoms. The appearance of red spots on the heart of the foot, consider and skin-related diseases, it is recommended not to scratch the stimulus, you can go to the hospital dermatology department to find the cause.