Circuit board fixing structure convenient to use

The utility model discloses a circuit board fixing structure convenient to use. Including a base, a circuit board body is placed on the base. The circuit board body is provided with a pressing plate.A hollow pin is inserted between the pressing plate and the base; the top end of the hollow pin is fixedly connected with a top cap; a first spring is connected between the inner side wall of the hollow pin and the pressing plate; a fixing block is fixedly connected to the interior of the tail end of the hollow pin, a pull rod is rotatably connected to the fixing block, the end, deviating from thefixing block, of the pull rod penetrates through the bottom side wall of the hollow pin and is fixedly connected with a handle, a limiting groove is formed in the surface of the tail end of the hollow pin, and the handle is connected into the limiting groove through a limiting device. According to the utility model, through the interaction among the handle, the limiting groove, the limiting pin,the pressing block, the sec