Reddish urine color after gallbladder removal may be caused by urinary tract infection, urethral stones, nephritis and other reasons. 1. Urinary tract infection: Urinary tract infection is the inflammatory response of the urinary tract epithelium to bacterial invasion, and under the stimulation of inflammation, it is possible to make patients with reddish urine after gallbladder removal. 2. Urinary tract stones: Urinary tract stones are mainly formed in the kidneys and bladder, and are discharged from the ureter and urethra. After the removal of gallbladder, it may be due to the urethral stone and lead to local mucous membrane breakage and ulceration, thus causing local mucous membrane bleeding, there may be the phenomenon of reddish urine color. 3. Nephritis: nephritis is due to various reasons resulting in damage to the filtration barrier of the kidneys, nephritis patients in the gallbladder removal, if the urine red blood cells or decomposition products are more likely to appear in the phenomenon of reddish urine. When the phenomenon of reddish urine occurs after gallbladder removal, it is recommended to go to the urology department of the hospital in a timely manner, and actively cooperate with the doctor for treatment after detailed examination.