The stool color is very pale yellow and a little white, which may be related to the individual’s diet, or may be caused by biliary obstruction. Common causes and treatment 1, diet: the food we consume has a great impact on the production of stool, if the color of the food consumed is yellowish or white, it may lead to a pale yellowish white stool color. You can specifically recall the food you recently ate, if you determine the impact of food, generally do not need treatment, after 1-2 days stool will naturally return to normal dark yellow; 2, biliary obstruction: biliary obstruction of patients with bile drainage is not smooth, will make the stool color change. In patients with incomplete biliary obstruction, bile can be partially drained into the intestine, and the color of the stool can remain normal; if the obstruction is further aggravated, the bile will further decrease into the intestine, and the stool will change to white. If complete bile duct obstruction occurs, the stool will change to clay color. Biliary obstruction can be caused by various diseases, such as biliary ascariasis, cholelithiasis, pancreatic cancer and so on. In case of biliary obstruction, the cause of the obstruction should be clearly identified and treated, and symptomatic treatment such as antispasmodic and anti-infective treatment should be provided, and if necessary, the obstruction should be removed through surgery. During the treatment period, it is important to prevent liver function damage, renal failure and respiratory failure. When the color of stool changes, such as clay, dark green, black, or lumpy, unformed, or watery, it is necessary to pay attention to it and seek medical attention in time.