What to do with urine deficiency?

1, drinking too little water will cause urine concentration, urine concentration, urine salt crystals easy to precipitate, resulting in stones, stones will gradually increase, resulting in low back pain, hematuria and other manifestations. 2, oliguria will reduce the scouring of urethral mucosa, so that bacteria are easy to breed in urethral mucosa, easy to induce urinary tract infection, showing frequent micturition, urinary pain and other performance.3, oliguria, the concentration of toxic substances in urine will increase, will increase the stimulation of bladder mucosa, easy to cause chronic cystitis and even bladder tumor.