The invention relates to a business card type tool box with a ratcheting function. In the invention, a ratchet wheel is arranged on a 1/4 corner of a body close to the front end part and a first side edge, and the rotating shaft of the ratchet wheel is parallel to the first direction of the body; the design can ensure that the tool box has a smallest volume and generates a maximum labor saving turning effect, and a turning operation can be carried out at a wall corner; wall parts are integrally formed and connected between the front end part and a stress part, thus the structural strength of the body can be effectively improved; the wall parts are used for providing a large-area contact function for the fingers of a user, thus rotation force applied by the user can be effectively and completely transmitted to a fastening piece through the tool box; and moreover, the two wall parts are suitable for users getting used to using the right hand or the left hand without the limit of directions, thus the adaptive capacity of the product is improved.