The weight-loss principle of winter melon slimming soup is that winter melon is cold and sweet, and it has the effects of moistening lung, promoting fluid production, resolving phlegm and quenching thirst, diuresis and detumescence. Moreover, the propanol diacid contained in wax gourd can effectively inhibit the conversion of sugar into fat. In addition, the wax gourd itself does not contain fat, and its calorie is not high, which is of great significance to prevent the human body from getting fat, and can also help to keep fit. Moreover, wax gourd is also rich in vitamin C, high in potassium salt and low in sodium salt, which can be safely eaten by obese patients with hypertension, nephropathy and edema diseases.