Chlorpromazine has mainly antipsychotic and antiemetic effects. Chlorpromazine has antipsychotic effects, which are primarily mediated through its action on a variety of neurotransmitters. Chlorpromazine acts on dopamine, norepinephrine, acetylcholine, and a variety of other neurotransmitters, inhibiting neurotransmitter-related functions. Chlorpromazine is generally effective in treating patients with schizophrenia, improving positive psychotic signs such as mania and delusions. In small doses, chlorpromazine can have an effect on the emetic chemoreceptors of the central nervous system, which can produce an antiemetic effect on the body. Therefore, chlorpromazine can also be used to stop vomiting, intractable vomiting, and in patients with eructation. It is recommended to start with a low dose and gradually increase the dosage, must strictly follow the doctor’s instructions to take the drug, and should be timely follow-up. Avoid drinking alcohol during the use of the drug, drinking alcohol may enhance the inhibitory effect of chlorpromazine on the central nervous system, there may be a small lethargy, pupil dilatation, lower body temperature and other adverse reactions.