Fixture and assembling device

The invention provides a fixture and an assembling device. The fixture is used for fixing a display module on the assembling device, and comprises a first clamping structure and a second clamping structure, wherein the first clamping structure comprises a first accommodation space for arranging a part of a first member on the assembling device and a first screwing member extending into the first accommodation space, and the extending length of the first screwing member can be adjusted; the first screwing member is pressed against the first member in the first accommodation space, and is fixedly connected with the assembling device; the second clamping structure is connected with the first clamping structure, and comprises a second accommodation space for arranging a part of the display module and a second screwing member extending into the second accommodation space, and the extending length of the second screwing member can be adjusted; the second screwing member is pressed against the display module in the second accommodation space. According to the fixture and the assembling device, the extending lengths of the first and second screwing members can be regulated to be adapted to the mounting of display modules with various sizes and thicknesses according to the sizes of the clamped display modules and the assembling device respectively.