It is possible to develop proteinuria by drinking less water. Normal people such as drinking less water, can be due to urine concentration and other reasons and make protein in the urine, but usually does not reach the standard proteinuria. However, some patients especially drink too little water, sweating too much resulting in extreme concentration of urine, may make the urine test error and thus false-positive proteinuria, at this time after appropriate water proteinuria will return to normal. Urine examination needs to be appropriate water, can not drink too much water, also can not drink water for a long time, will have an impact on the proteinuria examination. It is recommended that patients with proteinuria go to the hospital in a timely manner, under the guidance of the doctor to improve the relevant examination, to clarify the cause.