Mold companies are always facing the urgent price quotation requirements for plastic parts from customers in today’s competition market. This paper analyzed the price composition based on the standard man-hour method of plastic mould. Furthermore, the calculation of manufacturing cost for injecting mold was discussed. A computer aided quotation package for small and medium mould company was developed on SolidWorks software, by which the quotation of plastic mould can be obtained quickly. The application results of a number of actual cases show that the method can satisfy the engineering requirements of mold price.