Stomach cancer is a common and serious disease, which brings a lot of worries and troubles to patients. Drug treatment is a necessary means for stomach cancer treatment, so what do we need to pay attention to in the medication treatment of stomach cancer? 1. Oral medication. Stomach cancer patients should try their best to take drugs orally. This is convenient and can avoid the painful and traumatic way of drug administration such as injection. In addition, oral medicine is not easy to produce drug dependence due to slow absorption. For some cancers, such as oral cavity cancer and esophageal cancer, since they cannot be taken orally, they can be changed to rectal or transdermal route. When the above methods are ineffective, other methods such as injection can be considered. 2.Graduated drug administration. Giving drugs according to the ladder means choosing different drugs according to the pain degree of gastric cancer patients from weak to strong. Non-opioid drugs are preferred for patients with mild to moderate pain. If the pain relief is not effective or the pain level increases, then weak opioids are switched. Patients with moderate to severe pain should use strong opioids. 3. Give the medication on time. That is to say, according to the prescribed time interval medication, rather than according to the need to give medication. Nowadays, slow-release and controlled-release agents are often used in clinic. Therefore, if the medicine is taken when stomach cancer pain occurs, there will be a period of time when it cannot achieve the expected effect because of the failure to reach the starting concentration, which makes the pain not well controlled. Administering medicine on time can maintain stable drug concentration in the body, which can make the pain get continuous relief. 4.Individualization of medication. This refers to the use of pain medication dosage should be adjusted from person to person and from stage to stage. Each patient’s sensitivity to pain medication varies greatly, so the dosage of pain medication can vary greatly between individuals. There is no standard or maximum dose of opioids, as long as the dose that can make pain relief is the right dose. The above introduces several principles of medication for stomach cancer, hope it is helpful to you. Disease enters from the mouth is very appropriate to reflect stomach cancer. To prevent stomach cancer, we must pay attention to dietary problems, eat less fried and spicy food, pay attention to dietary hygiene, and eat less street snacks in order to avoid getting sick.