Bicycle tool box

The utility model discloses a bicycle tool box, which comprises a box body, wherein the box body is a triangular shell; a cover body is movably connected to one side of the box body; the top and the rear side of the box body are connected to a bicycle frame through buckles; a water storage cavity is arranged at the front end of the box body; a water inlet and a water outlet are respectively positioned on the side and at the front end of the box body; a tool cavity is arranged at the rear end of the box body; a partition plate divides the tool cavity into an upper space and a lower space; a first-aid kit is arranged in the upper space; maintenance tools are arranged in the lower space; two ends of an elastic fixing strap are respectively fixedly connected to two ends of the tool cavity; and a storage box is arranged in the lower space. The bicycle tool box is simple in structure and multifunctional, and can be used for storing water; and because the bicycle tool box is provided with the maintenance tools and the first-aid kit, the bicycle tool box is suitable for travel.