Urine seems to float above the layer of oil can be caused by dietary grease, hyperlipidemia, nephritis and other factors. 1. Dietary grease: eating too much high-fat, greasy food can lead to excessive fat intake, more than the body’s ability to absorb lipids, excess unabsorbed fat molecules can be discharged through the urine, appearing in the urine above the floating layer of oil manifestations. 2. Hyperlipidemia: when the content of lipoprotein and cholesterol in the blood increases, it can be filtered into the urine through the renal tubules and glomeruli, and the oil floating on the surface of the urine can appear after urination. 3. Nephritis: When nephritis occurs, it can lead to a decrease in glomerular filtration and tubular reabsorption, resulting in an increase in lipoproteins and cholesterol epithelial cells in the urine, which can lead to a floating layer of oil on the surface of the urine. The above symptoms may also be caused by other factors, you should go to the regular hospital in time, under the guidance of specialists to actively carry out appropriate treatment, and strive for early recovery.