A tool suspension device includes a seat, a receiving element, and a fixing element. The seat has a suspension portion. The seat has a first positioning portion on a front face thereof. The receiving element has at least one tool receiving portion and a second positioning portion. The second positioning portion is detachably positioned to the first positioning portion so that the receiving element is detachably disposed on the seat. The tool receiving portion is located at a face of the receiving element opposite to the seat. The fixing element is disposed on the seat and the receiving element to fix the seat and the receiving element together. Thus, the seat can be applicable for receiving elements designed for various kinds of tool.