Normally, human urine appears pale yellow, and the presence of oil droplets in urine indicates a problem with physical health. The presence of oil droplets in urine may be related to diet, urinary system diseases, etc. Eating too much oily food in daily life, urinary tract infections causing abnormal kidney function, and oil cannot be metabolized well by the body, which is excreted through urine. Normal urine is pale yellow, and the presence of oil droplets in urine is caused by the following reasons: 1. It may be related to recent diet, eating too much oily food, the body cannot absorb all of it, or taking medication, so that the oil metabolized by the body is filtered through the glomerulus and excreted through urine. 2. If oil droplets appear in urine, it may indicate that the patient has problems with the urinary system or lymphatics. Patients with nephritis or urinary tract infection have abnormal kidney function, and there are problems with reabsorption during fat filtration, leading to the presence of oil droplets in urine. When the patient's lymphatic system is connected to the renal collecting system, the components of the oil directly enter the urine, and the patient experiences oil droplets in urine. 3. There is also a clinically uncommon condition called chyluria, which is the connection between the lymphatic tubules and the collecting system of the kidneys. These lymphatic fluids are excreted into the urine through the kidneys, appearing as a layer of milky white oil-like substance on the surface. If this problem occurs, it is necessary to seek medical attention promptly.