In this work, we propose a model of the influential factors of the O2O e-commerce acceptability in local services. This model is established on the base of Equation Model Theory, Technology Acceptance Model, and Perceived Risk Theory, and can be used to help enterprises promote e-platforms. Using relevant, domestic and international information, we perform case studies and questionnaire surveys. There are two steps in the development of the model. The first one involves the development of an initial model, which consists of eight latent variables of influential factors, including subjective perception, Social group influences, and perceived risk, as input variables. The second step is the development of the final influential factors of the acceptability model, which is the optimization of the initial model according to the results from the simulation experiments. The results from the simulation experiments reveal the positive effects of Social group influences and subjective perception on willingness. All paths are significant.