The method to develop the rolling tool system for the fin forming machine is presented in this paper. The principle of the waveform shaping is analyzed and different schemes of the rolling tool are built and discussed. After the selected of the most optimization of the rolling tool scheme, the parameter design of the rolling tool is calculated. Correspondingly, the other auxiliary components of the fin forming machine are proposed. In the end, the whole assembly of the rolling toll system is discussed. The development of the fin forming machine used this rolling tool system will achieve a variety of specification fin products.