What are the reactions to chemotherapy? Loss of appetite and diet; nausea and vomiting; constipation and diarrhea; mouth ulcers; hair loss. Second, the response to chemotherapy reactions 1, chemotherapy should drink more water during the period, at least 2000ml per day to protect the liver, in order to facilitate the excretion of drug toxins. 2, during chemotherapy, it is advisable to eat small amounts of more meals, eat light, easy to digest, nutritious food, such as fresh vegetables and fruits, after the food and beverage improves, you can eat high protein, high calorie, high fiber, low fat diet, such as fresh lean meat, eggs, milk and blood tonic food, such as red dates, peanuts, black fungus, black sesame, shiitake mushrooms, pig’s feet, pig liver, etc.. If nausea occurs, do not be nervous, it is advisable to choose a sitting position, slow deep breathing, such as vomiting after the timely rinsing of the mouth to reduce the adverse stimulus, vomiting after the appropriate to eat half soup to protect the gastric mucosa. 3, keep the indoor air fresh, ventilation at least twice a day, 15-30 minutes each time, pay attention to personal hygiene, diligent change of underwear. 4.Brush your teeth with soft bristles or scald your toothbrush with hot water to prevent gum bleeding. 5.Keep the bowels open. 6.Keep your mouth clean, rinse your mouth after meals and before bedtime, which can prevent mouth ulcers.