Abstract: Nowadays in China,most domestic garment enterprises can only establish rough production plans based on practical experience,being unable to estimate the production result(including production efficiency,capacity and profit) scientifically and reasonably.This may often result in production confusion and bring some risks to the enterprise.For changing this situation,the author brought in the concept of learning effectiveness and applied statistical analysis to prove that the method of learning effectiveness was in good agreement with the rule of production of garments of woven fabric,i.e.,the changing rule of the production time for each garment increasing with the accumulated product quantity and the change of each machine′ output meeting the regulation of learning curve. This offers us a new scientific method to estimate production result and lower production cost.