Erythema of the skin on dasatinib is one of the typical side effects of dasatinib. Because everyone’s drug-resistant body is different, the erythema will have different severity, so it is important to treat the erythema according to its severity. 1. If the plaques are relatively small in extent and there is no pain or itching sensation, the symptoms of erythema may slowly disappear during subsequent treatment and no special treatment is needed. 2. Some patients eating Dasatinib skin erythema itchy, they want to scratch with their hands, and then the erythema may become serious, into a piece of small red rash, can be controlled by drugs under the guidance of the doctor, such as cetirizine hydrochloride tablets, loratadine tablets, such as anti-allergy drugs. 3. Some patients eat dasatinib skin erythema situation aggravated, become a rash, belong to the itchy to sleep at night situation, through the drug can not be relieved, can only go to the specialized dermatology department, or in the professional doctor’s guidance to reduce or stop taking dasatinib tablets. When erythema occurs, it is recommended that patients communicate and consult with their doctors in time, and do not take anti-allergy drugs or reduce the dosage of dasatinib tablets without authorization.