U Umkm nobie toys faces a high defect rate in the production process of the kereta 5 in 1 wooden toy, causing product quality to fall below company standards. this research aims to control the production process quality, identify defect causes, determine failure risk priorities, and evaluate improvement effectiveness using statistical process control (spc) and failure mode and effect analysis (fmea) within a plan-do-check-act (pdca) cycle. the plan stage covers process mapping, quality plan development, check sheets, pareto diagrams, p-chart with process capability calculation through dpmo, fishbone diagrams, and fmea. the do stage implements sops, a visual standard board, and a machine maintenance schedule. the check stage compares results before and after implementation. results show the p-chart center line decreased from 0.524 to 0.244 (a 53.44% reduction), dpmo decreased from 524,000 to 244,000, and sigma level increased from 1.44 to 2.19. all priority failure causes showed reduced rpn values, with the largest reduction at 48.98% for the absence of a painting sop, followed by an uneven jigsaw worktable at 48.05%, and five other causes ranging from 28.83% to 40.48%. in the act stage, effective improvements were standardized as permanent work standards. the evaluation results indicate that the implementation of corrective actions contributed to a reduction in the proportion of defective products and the rpn value, as well as an increase in the sigma level.