Do not take a bath on the day of cupping. In special cases, you need to take a bath four hours after cupping, after the skin is dry and the pores are closed. Cupping belongs to the external treatment method of Chinese medicine, using burning to expel air from the jar, causing negative pressure and making the skin at the cupping site congested with blood or blisters. Cupping is a stimulation therapy. External sensation of evil qi, blocking the meridians can lead to headache, so cupping can treat external headache or play a systemic health role. After cupping, capillaries can dilate, engorge or even rupture, which can remove the evil qi. After cupping, local pores are opened, so bathing at this time can cause pain in the head and body due to the invasion of cold Qi through the sweat holes. If the skin blisters, bathing is extremely easy to damage, leading to infection. Therefore, do not take a bath on the same day. In special cases, you need to take a bath four hours after cupping, after the skin is dry and the pores are closed.