Abstract-Development and research of new products in fashion small and medium-sized enterprises often lacks of standard. Disarrangement of the developing decision process has the negative effect on their growth and marketing performance. In order to offering a reference decision making standard for them, a cross module decision managing process model is established. It is structured based on the new product developing business process, and also based on the interviews on twelve fashion small and medium-sized enterprises. Besides the model, three main research results are also obtained as following. Four decision modules are extracted. Important decision points are refined. And decision process with information flow and sequence flow is clarified.