Objective To explore the value of two-dimensional ultrasound and super microvascular imaging（SMI） in preoperative staging and postoperative pelvic floor function assessment of cervical cancer.Methods A total of 62 patients with cervical cancer who received surgical treatment in our hospital were selected to receive two-dimensional ultrasound

SMI and pathological biopsy.Taken the pathological results as the gold standard

the accuracy of two-dimensional ultrasound and SMI in preoperative staging of cervical cancer was compared

and the evaluation value of ultrasound in postoperative pelvic floor function of cervical cancer patients was analyzed.Results The diagnostic accuracy of two-dimensional ultrasound and SMI in cervical cancer preoperative staging were 70.97% and 80.65%

respectively

and the diagnostic accuracy of combined application was 90.32%.Two-dimensional ultrasound of postoperative perineal pelvic floor showed that 26（41.93%） patients had anterior pelvic prolapse

10（16.13%） patients had stress urinary incontinence

9（14.52%） patients had posterior pelvic prolapse

and 33（53.23%） patients had postoperative pelvic floor dysfunction.The maximum Valsalva lower bladder neck mobility

urethral rotation angle

resting bladder neck urethral angle

and maximum Valsalva lower bladder urethral angle after cervical cancer surgery were significantly higher than those before surgery

the differences were statistically significant（all P<0.05）.Conclusion Two-dimensional ultrasound combined SMI has higher accuracy in the diagnosis of cervical cancer preoperative staging

which is conducive to the determination of clinical treatment plan.Two-dimensional ultrasound plays an important role in the evaluation of postoperative pelvic floor function.