Mainboard fixing tool

The invention discloses a mainboard fixing tool. The mainboard fixing tool comprises a fixing bottom plate; the bearing plate is parallel to the fixed bottom plate and is arranged above the fixed bottom plate; the elastic supporting part is connected between the fixed bottom plate and the bearing plate in a supporting manner, is compressed when the pressure borne by the bearing plate reaches a preset value, and is reset when the pressure borne by the bearing plate is smaller than the preset value; and the adsorption supporting part is convexly arranged relative to the upper surface of the bearing plate and is used for adsorbing, fixing and supporting the mainboard. The mainboard fixing tool can support and fix the mainboard, and damage to the mainboard and electronic elements on the surface of the mainboard in the mainboard maintenance process can be effectively avoided. 本申请公开了一种主板固定工具，包括：固定底板；承载板，平行所述固定底板且设于所述固定底板的上方；弹性支撑部，支撑连接于所述固定底板和所述承载板之间，且在所述承载板受压压力达到预设值时被压缩，在所述承载板受压压力小于预设值时复位；吸附支撑部，相对所述承载板的上表面凸设，用于将主板吸