Abstract:Objective: To study the ultrasonographic characteristics of orbital rhabdomyosarcoma in children. Methods: The clinical data of orbital rhabdomyosarcoma and recurrence in one child was retrospectively analyzed and the related literature was reviewed.Results: The patient was 6 years old.The right eye mass was found to be more than half a month. Ultrasound examination before surgery showed that a solid hypoechoic mass of about 3.0cm×1.5cm was detected near the nasal side of the right orbit, with clear boundary, irregular and uneven echoes. The right eye bulb was shifted outward under pressure, and no obvious abnormal echoes were observed in both eyes.CDFI: probe into the mass and rich blood flow signals; PW: probe into the low-speed and high-obstruction artery spectrum; PSV:30cm/s; RI:0.8.Diagnostic opinion: solid mass near nasal side of right orbit, considering high possibility of rhabdomyosarcoma, pleomorphic adenoma of lacrimal gland (malignant change) to be excluded.Postoperative pathology :(right eye mass) malignant tumor, consistent with rhabdomyosarcoma.Conclusion: Orbital rhabdomyosarcoma is rare in children, and its ultrasonographic manifestations have certain characteristics. Mastering these characteristics is beneficial for sonographers to diagnose this disease.