If the patient is sure that the swelling of the lips occurs after eating lychee, it is necessary to consider the occurrence of allergy. Patients need to immediately take oral antihistamines, such as loratadine, cetirizine, paracetamol, ibastine tablets, fexofenadine, these drugs generally take one of them can be. And the patient should go to the regular hospital immediately for consultation, because the patient sometimes only skin allergic inflammatory reaction, but may soon progress to anaphylactic shock, so it is best to be in the hospital intravenous application of calcium gluconate, as well as glucocorticoids to alleviate the allergic inflammatory reaction, and at the same time should be closely for the observation of the condition. If these critical situations occur, it is safest to stay in the hospital because immediate resuscitative measures can be taken, such as endotracheal intubation or the application of epinephrine.