Recent advances in image editing systems reveal critical limitations in handling complex real-world scenarios requiring multimodal condition controls. While text instructions enable broad semantic guidance, visual examples provide precise visual reference in specific scenarios, existing unimodal approaches fail to synergize these complementary modalities effectively. We propose EditMaster, a unified framework that integrates text and visual controls through multimodal instruction learning, enabling precise image manipulation with bidirectional consistency. Our framework introduces three core innovations: A multimodal large language model enhanced with extended visual tokens replaces CLIP text encoders, generating pre-edited visual guidance that aligns textual commands with visual examples to guide diffusion model toward high-quality outputs; The Mask-Based Decoupled Residual Exemplar-Attention module preserves unedited regions through spatial masking while integrating visual details via residual pathways; A systematic data construction method converts unimodal editing datasets into a task-specific multimodal dataset, eliminating the need for de novo data construction. Experiments show that our approach outperforms unimodal baselines and excels in complex multimodal instruction editing, setting a new benchmark for this field.