Most medical practitioners believe that a preference for sweet foods indicates a deficiency of the spleen. Sweetness can nourish the spleen, but too much sweet food can cause spleen qi to win and kerf the kidneys. The spleen likes dryness and hates dampness, and sweet food is nourishing and greasy, so it will hinder the spleen and increase its burden. Therefore, eating sweet food can nourish the spleen, but eating too much sweet food will cause “spleen disease”, which means spleen heat, and eating too much sweet food will easily stagnate the spleen, which will turn into heat after a long period of time. In “Su Wen‧Qi Qi Lun”, it is written that “sweet food makes the middle full”, which also refers to the spleen’s congestion. The imbalance of qi flow will lead to the recurrence and metastasis of tumor. In addition, the spleen and stomach are the basis of the latter. The spleen belongs to the middle earth, and Taiyin spleen earth likes dampness and hates dryness. The spleen is the source of phlegm, and spleen dampness can easily lead to phlegm and dampness, and phlegm is the source of all diseases. Phlegm, the word look, fire inflammation and disease, from this point of view, phlegm, most of the so-called heart disease, cerebral hemorrhage, gout, cancer are also related to phlegm. As the saying goes, the birth of biochemistry is all due to fire, fire all over the sky everything glory, all five organs have fire, and the heart is unified, there is spleen wet fire and condensed phlegm is damp phlegm. Western medicine says that the spleen is the largest immune organ in the body, located in the upper left abdomen, accounting for 25% of the total lymphoid tissue in the body, containing a large number of lymphocytes and macrophages, and is the center of cellular and humoral immunity in the body. As for the “spleen” in Chinese medicine, its anatomical location is discussed in different ways in the literature. The “Medical Guan – Shape and View” states, “The stomach …… has the spleen on its left side, which is attached to it with the same membrane as the stomach.” Regarding the color pattern of the spleen, there are various descriptions in Chinese medicine. The “Medical Guan” describes it as “its color is as red and purple as a horse’s liver, and its shape is like a knife and sickle”; the “General Pivot of the Medical Program” describes it as “its shape is like a dog’s tongue and its shape is like a chicken’s crown”; the “Introduction to Medicine” says it is “flat like a horse’s hoof “. Thus, from the position and shape of the spleen, the “spleen” in Chinese medicine is equivalent to the spleen and pancreas in modern anatomy. Therefore, the spleen in Chinese medicine should also be related to immune function. Therefore, since sweet food hurts the spleen, it will also affect the body’s own immune function. In conclusion, for tumor patients, they should stay away from sweets. And we believe that the tumors most closely related to sweets include: brain tumor, small cell lung cancer, gallbladder cancer, peritoneal tumor, intestinal cancer, uterine cancer, bladder cancer, kidney cancer, ovarian cancer, pancreatic cancer, seminoma and so on. So, if you are a tumor or non-tumor patient with a sweet tooth and heavy dampness, what should you do to dissolve the dampness or reduce the risk of developing tumors? Moxibustion can help you. The efficacy of moxibustion includes: warming Yang Qi, strengthening the spleen and stomach, regulating the three jiao, relieving dampness and swelling, moving Qi and blood, harmonizing the flush, strengthening health, etc. It is written in ancient medical books that “moxibustion can be used if the needles and medicines are not sufficient”, and those with heavy spleen dampness and spleen qi deficiency can be moxibuited in the central epigastric region and the foot three li, and those with kidney qi deficiency can be moxibuited in the Guan Yuan and the vital gate. It is a good effect to help warm the Yang and transform the Qi, and to strengthen the spleen and help transport.