Mastocytosis, also known as cystic hyperplasia of the breast, is a common benign disease in young and middle-aged women, and mastocytosis patients can eat lychee. The exact cause of the onset of mastocytosis is not clear, and is thought to be closely related to estrogen, progesterone and lactogen imbalance. The main clinical manifestations are unilateral or bilateral breast swelling and discomfort with the menstrual cycle, and even breast lumps in severe cases, which can be relieved or even disappear after the menstrual period, and the breast lumps can also disappear. The diagnosis usually requires further ultrasound examination of the mammary glands to clarify the diagnosis. The main treatment is to dredge the liver and regulate the qi, and if necessary, to take oral treatment with Prozac Pills or Breast Disease Spirit. As a fruit, lychee is rich in vitamin C, which does not lead to an imbalance of estrogen, lactogen or progesterone in the human body and does not lead to an increase in the symptoms of mastocytosis, so patients with mastocytosis can eat lychee.