Low side effects of chemotherapy usually means that chemotherapy drugs are good for the human body because they are less toxic to the human body. Chemotherapeutic drugs are usually cytotoxic and have certain toxicity to important organs of the body such as liver, kidney, heart and lungs, and usually if the function of these organs is damaged, it will be life-threatening in severe cases, and it has inhibitory effect on the immune system, and may lead to endocrine dysfunction. In order to reduce the damage of chemotherapy drugs to the human body, usually need to review the liver and kidney function before use, if the liver and kidney function is damaged, need to be in the chemotherapy at the same time to protect the liver and kidney treatment. Periodic post-checks of liver and kidney function and ionic electrolytes are also needed during the interval between chemotherapy treatments to avoid causing serious side effects. In addition, blood counts and electrocardiograms should also be monitored, please follow the doctor’s instructions.