In Traditional Chinese Medicine (TCM), various parts of the pig, especially the spleen itself (often referred to as "zhu pi" or "pig spleen"), have been used historically to support the function of the human spleen. The spleen, in TCM theory, is considered central to digestion and the transformation of food into vital energy (Qi). Pig spleen is thought to nourish and strengthen the spleen Qi, improve appetite, and address symptoms such as fatigue, diarrhea, and poor digestion. These uses are deeply rooted in traditional dietary therapy and herbal medicine texts. However, from a scientific standpoint, there is limited direct evidence supporting the use of pig or pig spleen for enhancing human spleen function or treating spleen-related disorders. Most available data are anecdotal or based on traditional practice rather than rigorous clinical trials. Some nutritional value is present, as organ meats are rich in protein, iron, and certain vitamins, but there is no specific evidence that pig spleen or other pig tissues have unique or targeted effects on the human spleen organ system. Therefore, the justification for its use is primarily traditional, with the available evidence being modest and not substantiated by modern biomedical research.