The invention discloses a tool box. The tool box comprises a support and a box body. The box body is arranged on the support in a sliding mode. When the box body slides to a first limit position from the first end of the support to the second end of the support, the box body can rotate around the second end of the support. During construction, when a carrier needs to move, the support can be arranged on the back, the tool box cannot occupy the space in front of the body of the carrier under the circumstance, the double hands of the carrier are freed up, and moving and climbing of the carrier are convenient accordingly. When the carrier reaches the construction position, the box body is rotated after being pulled out along the support to the first limit position, and the box body is located at one side of the body of the carrier. Thus, tools can be selected and put back while the tool box is carried on the back, the tool box can be used at the construction position with a platform or without the platform and is not limited by the condition of the construction position, and normal conduction of construction work is facilitated.