The adverse effects of neem leaves boiled in water for bathing are not known, and can be used for eczema and itching conditions. Neem leaf is a traditional Chinese medicine, also known as neem leaf, which is cold in nature, bitter in taste, and belongs to the liver and small intestine meridians. The adverse effects of neem leaves boiled in water for bathing are unclear and there are no relevant clinical reports. It is effective in killing insects and relieving itching, clearing heat and drying dampness, promoting qi and relieving pain (relieving pain by regulating the body’s qi), and is often used in snake sores and scabies, eczema and itching, hernia pain, insect bites, trichomoniasis, bruises, swelling and pain, and other conditions. The adverse effects of neem leaves are not clear, and contraindications are that pregnant women should not take it. Precautions are due to its bitter cold nature, so it should not be taken more, to avoid damage to the spleen and stomach. Neem leaves boiled water bath is mainly used for skin eczema itching, such as the use of medication after the adverse reaction should be discontinued in a timely manner, and to the hospital.