Positioning block convenient to install

The utility model discloses a positioning block convenient to install, which comprises a concave block, the top of the concave block is provided with a placing hole penetrating through two sides, the inner side of the bottom wall of the placing hole is provided with a moving block, when a worker needs to install the positioning block, the concave block and a convex block are respectively placed at the working place of the positioning block, and the concave block and the convex block are arranged at the working place of the positioning block. When the device needs to be positioned, fingers stretch into the inner side of the space hole, the limiting plates are pushed towards the two sides with force, the movable blocks can move towards the two sides along the track grooves through the limiting plates into groove holes formed in advance in the device needing to be positioned, and the movable blocks and the device needing to be positioned are fixed; then the small fixing block and the fixing block are placed on t