The invention relates to the field of printing and aims to provide a type composition tool which is simple in structure and easy and convenient to operate. The type composition tool comprises a head plate, a tail plate and a composition module. The head plate is provided with two first clamping blocks. The tail plate is provided with two first clamping grooves matched with the first clamping blocks. Each composition module comprises one or more connecting plates and one or more word plates. One side of each connecting plate is provided with two second clamping blocks matched with the two first clamping grooves. The other side of each connecting plate is provided with two second clamping grooves matched with the two first clamping blocks. The type composition tool has the advantages that the structure is simple, the connecting plates are connected with one another through matching of the first clamping blocks and the first clamping grooves, the composition module with any length can be formed through composition, the word plates are fixed into the connecting plates through matching between third clamping blocks and third clamping grooves, the word plates cannot fall during printing, and the head plate and the tail plate are installed at the two ends of the composition module.