In recent years, the Peruvian garment industry suffered drops in its production levels and its participation in the national market due to the low level of productive efficiency of its companies. In the cutting process of a garment company, productive problems were found such as defective overproduction, disorganization of the area and unproductive times that did not add value. The objective of the research is to propose an improvement model using Lean Manufacturing tools, specifically 5s, Kanban, SMED and Poka-Yoke, to increase the productivity level, currently at 78.12%. The results showed an increase in productivity of 10.78%, a reduction in defective production by 5.43% and a decrease in setup time of 12.03 minutes. These results were validated through a simulation of the tools in Arena 14.0, demonstrating the validity of the proposed model.