Lateral position pelvis support

The utility model relates to a side-lying position pelvis support which comprises a placing strip, a supporting mechanism for supporting the pelvis of a patient and an adjusting piece rotationally arranged in the placing strip. The supporting mechanisms are oppositely arranged in the placing strips; the supporting mechanisms are in threaded connection with the adjusting piece, and the adjusting piece drives the supporting mechanisms to get close to each other. The problems that in an existing scheme, supporting structures at the two ends of a fixing support are used for supporting a patient, the distance between the two ends of the fixing support cannot be adjusted, the supporting angle of the supporting structures cannot be adjusted, the fixing support cannot accurately support the pelvis position of the patient, and operation is affected are solved. And a traditional support forms two-point support fixation between the sacrum and pubis union of the lateral position of the patient, so that the support effect