This research is a study of the “ The Effects of raw material preparation and equipment maintenance, on production process with raw material quality as moderating variable. The sample in this study is the data in UKM Berkat Kebaya, the sample in this purposive sampling, where all member of the population of 60 month are given the same opportunity to become respondents. The sampling criteria includ :1. Report on the results of the production process of 60 month2. Period January 2013 - December 2017Regression analysis by performing assumption f and t. The result indicate that inventory of Raw Materials have a significant effect on Production Process, Equipment Maintenance has no significant effect on Production Process. Supplies of Raw Materials and Equipment Maintenance together have a significant effect on the Production Process. Product Quality as a moderating variable does not have the effect of Raw Material inventory to Production Process and Product Quality as moderating variables are not able to strengthen (weaken) Equipment Maintenance of Production Process.