Gum pain after chemotherapy may be caused by stomatitis, stimulation of chemotherapy drugs, etc. It can be treated by taking painkillers and anti-inflammatory and anti-infection drugs as prescribed by doctor. 1. Stomatitis: As tumor patients are prone to immunity decline, they are easily infected by bacteria, viruses and other pathogens. When patients’ mouth is infected, gum pain may occur due to the stimulation of inflammatory factors. If the gum pain after chemotherapy is more obvious, you can take painkillers under the guidance of the doctor, such as ibuprofen extended-release tablets, celecoxib tablets, acetaminophen tablets and other drugs to relieve pain. 2. chemotherapy drugs: due to chemotherapy drugs may also damage the normal immune cells, affecting the patient’s immune system, resulting in patients with low immunity caused by gingivitis gingival pain symptoms, in the taking of the above pain medication for treatment at the same time, but also need to take antibiotics for anti-infective treatment, such as metronidazole tablets, cephalexin tablets, amoxicillin capsules and so on. In short, patients with post-chemotherapy gum pain should go to the hospital in time, under the guidance of the doctor to clarify the gum itself or chemotherapy triggered by systemic symptoms after the use of appropriate medication for treatment, all drugs in strict accordance with the doctor’s instructions.