Arm supporting frame for radiotherapy period of breast cancer patient

The utility model belongs to the field of medical treatment, and particularly relates to an arm support frame for a breast cancer patient during radiotherapy, which comprises a fixed plate, a fixed column and a sliding column. A fixing column is fixedly installed on one side of the fixing plate, a sliding column is slidably connected to the surface of the fixing column, the end, away from the fixing column, of the sliding column is movably connected with a supporting part, the fixing plate is in a U shape, the supporting part is in an arc shape, a positioning hole is formed in the surface of the fixing column, and a positioning rod is slidably connected to the surface of the sliding column. The arm is placed on the supporting part to be supported, at the moment, the positioning rod on the sliding column and the positioning hole in the fixing column are located on the same straight line, the positioning rod slides to enter the positioning hole to be fixed, the sliding column and the fixing column are fixed mut