To observe the diagnostic value of the anterior chamber structural parameters measured by transperineal pelvic floor ultrasound of patients with stress urinary incontinence (SUI)complicated with bladder prolapse. Methods: A total of 33 patients with bladder prolapse stress urinary incontinence complicated with bladder prolapse SUI (in group A)and 76 patients with bladder prolapsed (in group B)from March 2019 to June 2022 were selected as the research subjects. All the patients had completed transperineal pelvic floor ultrasound examination. The ultrasound parameters of anterior chamber of the patients were compared between the groups, and the diagnostic value of which for SUI was analyzed by receiver operating characteristic (ROC)curve. Results: In the rest state, the values of urethral tilt angle (UTA)and retrovesicourethral angle (RVA)of the patients in group A were significantly higher than those of the patients in group B. In Valsalva state, the values of urethral rotation angle (URA)and bladder neck displacement (BND)of the patients in group A were significantly higher than those of the patients in group B. The value of D (the distance from the lower border of the pubic symphysis to the bladder neck)of the patients in group A was significantly lower than that of the patients in group B (P＜0.05). ROC curve analysis indicated that the combined values of the parameters of UTA, RVA, URA, BND, and D of the patients had diagnostic value for their bladder prolapsed complicated with SUI. The area under the curve (AUC), the sensitivity, and the specificity of the combined values of these parameters of the patients for diagnosing their bladder prolapsed complicated with SUI were 0.985, 95.9%, and 94.4%, respectively, and all of which were significantly higher than those of the UTA value, the RVA value, the URA value, the BND value, or the D value alone. Conclusion: Transperineal pelvic floor ultrasound can help to evaluate the bladder prolapse complicated with SUI of the patients, and the measured parameters of which have higher value for diagnosing the bladder prolapse complicated with SUI.