Male urethral strictures are common in urology, and the treatment of complex urethral strictures is a difficult problem for urologists. Urethral repair and reconstruction is the only effective method to cure this type of disease, which uses autologous tissue patches to enlarge and shape the urethra. Our department has achieved satisfactory clinical results in the treatment of complex urethral strictures using autologous tissue – oral mucosa urethral enlargement and reconstruction. Oral mucosa (including buccal mucosa, tongue mucosa and lip mucosa) has the advantages of thick epithelial layer, good tissue elasticity, strong resistance to infection, and suitable for survival in a wetter environment, etc. Moreover, it is convenient to take material from both sides of the cheek, tongue mucosa and lower lip at the same time, which is a more ideal urethral substitute. The urethra formed by applying oral mucosa is close to the normal urethra, and the procedure is relatively simple, with high mucosal survival rate and few complications, etc. It is an ideal treatment method especially for complicated and repeatedly failed surgeries for anterior urethral strictures. The development of this technology in our urology department has solved the pain of patients with complex anterior urethral strictures, filled the gap in the treatment of complex anterior urethral strictures in our hospital, and further consolidated the status of our department as the “Northwest leader” in the treatment of urethral strictures. Case 1: Long segment of anterior urethral stricture combined with urethral calculus, the stricture segment was about 13 cm. lingual mucosal urethroplasty (dorsal patch) was used and the patient recovered well after surgery. urethrography showed a wide urethra with a urinary flow rate of 20 ml/s. (1) Preoperative urethrography showed an anterior urethral stricture segment of about 13 cm. (2) Oral lingual mucosa was selected, about 14 cm. (3) Postoperative urethral catheter was left in place for 4 weeks, and after removal of the catheter urination was clear and urethrography was performed to show a spacious lingual mucoplasty urethra.