Method and apparatus for discovering the equipment causing product faults in manufacturing process

Equipment failure detection method in the manufacturing process according to an embodiment of the present invention comprising the steps of: obtaining a process route of data and process result data of the product; Determining, based on the obtained data, calculating a plurality of plants each of the contribution to a failure of the product; A step of applying, the modified associated rule for generating a cumulative effect of the installation path and to contribute to the defects of the above product as a rule with respect to the selected plant based on the calculated contribution; And it may include the step of calculating the defective equipment is determined on the basis of the index associated with the calculated contribution rule and said modified. According to an embodiment of the invention, it is possible to efficiently detect the charges of the facility to cause a defective product in the production process. Further, it is possible to search an optimal path that increases the yield of the manufacturing process.