Accidentally drink a mouthful of diesel fuel, should promptly seek medical treatment, may need to be gastric lavage treatment. Diesel fuel has a certain degree of toxicity, after drinking a mouthful of it, you should promptly seek medical attention, if necessary, under the operation of the doctor for gastric lavage treatment, and combined with the condition of the symptomatic treatment. In the process of recovery, we should also do a good job of daily care, more bed rest, in the digestive tract after the gradual alleviation of symptoms before eating, the initial period to the fluid food, gradually changed to semi-fluid food and soft food. At the same time, we should also closely observe the patient’s vital signs to prevent other abnormalities. After accidentally drinking a mouthful of diesel oil, do not handle it by yourself, because improper handling may cause serious consequences. When seeking medical treatment, you should strictly follow the doctor’s instructions and use medication wisely.