To provide a shielding material lifting device for a solar radiation shielding device allowing operation to lift a shielding material by operating an operation cord in the same direction, and allowing easy operation to pull up the shielding material without continuously operating the operation cord during the pull-up operation.

This solar radiation shielding device lifts a solar radiation shielding material 4 on the basis of operation of the operation cord 5 by lifting the solar radiation shielding material 4 on the basis of rotation of a winding shaft 3 by suspending and supporting the solar radiation shielding material 4 from the winding shaft 3 rotatably supported on an installation surface; and has a lifting device capable of automatically winding the solar radiation shielding material 4 on the winding shaft 3 on the basis of predetermined operation of the winding shaft 3 by the operation cord 5 by optating the solar radiation shielding material 4 for lowering on the basis of reciprocating operation in the vertical direction of the operation cord 5 in the winding shaft 3 by suspending one operation cord 5 on one end side of the winding shaft 3.