Typical symptoms of a strong stomach and a weak spleen are a good appetite but unformed stools or frequent constipation. A strong stomach qi will be able to eat a lot of food. If the food is not fully absorbed by a weak spleen, and if the spleen is the main transporter (the spleen has the function of digesting food and drink, absorbing food essence and water and transferring it to the whole body), in addition to transporter of food, there is also transporter of water and liquid, and if the spleen is weak, there is no power in transporter of water and liquid, and there will be unshapely or loose stools. People with strong stomachs and weak spleens usually show a characteristic of being able to eat but being thin. The stomach can process food into nutritious micro-substances. The Spleen is responsible for transporting and transforming nutrients into qi and blood, which are transmitted throughout the body. If you eat a lot of food but it is not absorbed by the body, you will lose weight because you have overeaten. Symptoms of a strong stomach and a weak spleen should be treated promptly by a doctor.