The functional indexes of the product can meet the clinical requirements, and the treatment angle available is up to 360 °. Special tumors with more flexible requirements for beam incidence angle will protect normal tissues more. Therefore, sitting radiation is a beneficial supplement to lying down radiation. The position deviation between each irradiation field does not exceed 1mm / 1 °. Based on this, the accuracy of translation, rotation and positioning correction of the rotating treatment chair system has been verified in multiple dimensions.