Deep learning-based fabric defect detection has emerged as a pivotal approach to improving textile quality consistency. However, the scarcity of high-quality defect samples remains a widespread bottleneck that limits the performance of defect detection networks. To address this issue, an innovative hierarchical-synthesis structure based fabric defect samples generation Model: the MaskFused-DynamicPerception Generative Adversarial Network (MF-DPGAN) was proposed. The dual Defect-Mask Generator (DM-G) with hierarchical attention, which decouples defect foregrounds from complex textile backgrounds, focuses on generating defect detail features and enhances the generation quality while suppressing interference from intricate background textures, endowing MF-DPGAN with flexible and controllable defect migration capability. A Multi-Layer Perception module incorporating multi-branch mixed Dynamic Selective Kernel mechanism, DSK-MixMLP block, strengthens the adaptability of MF-DPGAN to multi-scale defect features and morphological variations with complex backgrounds. A composite loss function, LMF-DPG, additionally integrating identity loss and mask loss, holistically regulates the balance between generated defects and background textures. Combined with DM-G and DSK-MixMLP, it achieves defect-background decoupling and high-fidelity defect synthesis. Extensive experiments demonstrate that MF-DPGAN can flexibly generate various multi-scale defect samples with physical plausibility and distribution diversity, achieving a 20.87% improvement in Fréchet Inception Distance (FID). Furthermore, the dataset augmented by MF-DPGAN is energetically able to train more accuracy models and then significantly enhances the performance of defect detection networks, yielding a state-of-the-art mAP of 98.83%. The designed MF-DPGAN provides an exceedingly effective solution for roundly facilitating the promotion of defect detection performance with the conditions of scarce defect samples.