In recent years, rapid prototyping(RP) and rapid tooling(RT) technologies have been implemented in many aspects of industry, especially in the area of new product development. Based on RP and RT technologies, a rapid design and manufacturing system of the product was proposed in this paper. From two ways of a concept or a sample to the final product design, a reverse engineering technology, transmission processing software or modules of the input data, structure analysis and optimization means and manufacturing process analysis tools were integrated in the system. Some examples of applications show that the integrated system not only can reduce the numbers of design iterations but also improve the efficiency and reliability of the product design.