Painless cystoscopy generally refers to flexible cystoscopy, which is suitable for checking patients who cannot place bladder truncation and urethral stenosis, and discovering whether there are stones and tumors in the bladder through examination, and the specific operation needs to be carried out under the guidance of the doctor. Cystoscopy is one of the more commonly used instruments in urology and can be divided into rigid cystoscopy and soft cystoscopy. Painless cystoscopy generally refers to the soft bladder mirror, easy to operate, painless, tube diameter is thinner than the hard mirror and the lens can be bent, not easy to miss the diagnosis. It is suitable for examining patients who cannot place a bladder cut-off position as well as patients with urethral stricture or prostatic hyperplasia. The examination can find out whether there are foreign bodies, stones, tumors and other lesions in the bladder and urethra, as well as the degree of prostatic hyperplasia and the presence of urethral stricture. Some patients are unable to undergo cystoscopy if their bladder capacity is less than 50 milliliters or if they have a urinary tract infection. Painless cystoscopy generally refers to a flexible bladder scope, which needs to be operated by a doctor during the examination, and any abnormality will be treated promptly.