A support stand comprises an elevating support; a monitor bracket; and a support member; the elevating support comprising a first and a second chasses, a pluralities of supporting blocks, an elastic member, a first and a second pivot subassemblies, a resisting member, a roller, and a pressing block; the first chassis comprises a resisting wall opposite to the second pivot subassembly; the elastic member is between the resisting wall and the pressing block, two ends of the elastic member resist the resisting wall and the pressing block, the first pivot subassembly is fixed to the plurality of supporting blocks connected to first ends of the chasses, the second pivot subassembly is fixed to the plurality of supporting blocks connected to second ends of the chasses; the resisting member is connected to the plurality of supporting blocks, the roller is assembled with the pressing block and rotatable against the resisting member.