The field of extracellular matrix (ECM) biomimicking holds immense promise for advancing theranostics, a fusion of therapeutic and diagnostic approaches. As we continue to explore and innovate in this area, future developments are poised to revolutionize personalized medicine, particularly in cancer, regenerative medicine, and wound healing. The integration of ECM-mimicking materials with cutting-edge technologies such as nanotechnology, 3D bioprinting, and advanced biomaterials will enable the creation of highly functional biomimetic scaffolds. These scaffolds will not only support tissue regeneration but also provide platforms for real-time disease monitoring and drug delivery. Innovations in bioactive ECM-mimicking materials, capable of dynamically interacting with cells and tissues, will enhance therapeutic outcomes by promoting tissue-specific responses. The development of ECM-based biosensors will allow for the precise detection of biomarkers, facilitating early disease diagnosis and enabling targeted therapies. The future also promises breakthroughs in biofabrication, enabling the creation of more complex, multi-functional ECM mimics for use in organoid models and high-throughput drug screening systems. Key challenges, such as scaling up production, ensuring biocompatibility, and improving material stability, must be addressed to fully realize the potential of ECM biomimicking in theranostics. Nevertheless, with continuous interdisciplinary collaboration, future innovations will not only enhance our understanding of ECM’s role in health and disease but also lead to transformative applications in patient-specific treatment strategies, advancing the future of precision medicine.