Ascites refers to the phenomenon of fluid accumulation in the abdominal cavity, and it is not possible to determine what color is the most terrible, because the color of ascites is different for different diseases, which includes yellowish, grass-green, red, as well as celiac, etc., and the specifics vary from person to person. 1. Yellowish color: It is mainly caused by diseases such as cirrhosis, nephrotic syndrome, renal failure and heart failure. The occurrence of these diseases will, to a certain extent, lead to a decrease in the plasma colloid osmotic pressure and a decrease in the absorption of tissue fluid, resulting in the formation of yellowish ascites. 2. Grass green color: mainly related to the occurrence of tuberculous peritonitis. Mycobacterium tuberculosis can cause damage to blood vessels and intestinal walls, leading to problems with fluid absorption, which in turn leads to the formation of grass-green ascites. 3. red: mainly due to peritoneal tumors, ruptured liver cancer nodules, ruptured corpus luteum, and tumors of abdominal organs metastasizing to the peritoneal area. The occurrence of these problems will make the peritoneum become less and less capable of absorbing fluids, and there will be rupture of blood vessels and bleeding, which will eventually form red ascites. 4. Celiac color: It may be related to filariasis, lymphatic system tumors, lymph node tuberculosis or surgical damage to the lymphatic vessels. Once this kind of problem occurs, then it is likely to lead to lymphatic fluid overflow, thus forming celiac-colored ascites. Once the patient has ascites of the above color, then he should go to the hospital as soon as possible to receive examination, to clarify the cause of the disease, and with the help of the doctor to deal with the disease in a timely manner.