Litchi as a medicine has the effect of nourishing blood, strengthening the spleen, moving qi and reducing swelling. Litchi is contraindicated for allergy sufferers. Litchi has the effect of nourishing blood, strengthening the spleen, promoting circulation of Qi and subduing swelling. Mainly after the disease body weakness, fluid injury thirst; spleen deficiency diarrhea; hiccups (hiccups); eating less; scrofula (mainly refers to the neck lymph node tuberculosis); furuncle (a rapid onset, easy to change and dangerous acute suppurative disease, the root of the foot is hard, such as the nail ding of the same); traumatic hemorrhage. It should be noted that people who are allergic to lychee should not use it to prevent allergic symptoms. People with yin deficiency and fire are advised to take it with caution. Patients should consult a doctor in time and follow the doctor’s instructions when uncomfortable symptoms occur. It is not advisable to self-medicate to avoid delaying the condition.