Liquid metals are arousing increasing interests among many challenging biomedical and healthcare areas, owing to their exceptional merits such as outstanding fluidic behavior, excellent electrical and thermal conductivity, tunable mechanical property, high plasticity, low vapor pressure, and favorable biocompatibility. Recent endeavors indicate that liquid metals have quickly become a new generation of functional biomaterials in both fundamental research and practical applications. Especially, their uniquely low viscosity and water-like flowability as metals in liquid state enable many unconventional biomedical operational modes through the easy-going injection way. This would mold a highly beneficial technology with numerous advantages distinguishing from those traditional open surgeries. This review is dedicated to systematically draft a new area of liquid metal enabled injectable biomedical technology based on their unique characteristics, summarize the recent representative developments and the associated biomedical progress. The state-of-art materials, technologies, and devices will be interpreted. Scientific opportunities and challenges will also be discussed. As emerging injectable biomaterials, the fundamentals, technology, and potential applications of the liquid metals would endow injectable operations to fulfill urgently biomedical demand as well as stimulate further endeavors along this critical direction.

液态金属由于其优异的性能，例如出色的流动性能，出色的导电性和导热性，可调节的机械性能，高可塑性，低蒸气压和良好的生物相容性，在许多具有挑战性的生物医学和医疗保健领域引起了越来越多的兴趣。最近的努力表明，在基础研究和实际应用中，液态金属已迅速成为新一代功能性生物材料。特别是，它们独特的低粘度和像水一样的液态金属流动性，通过易于注射的方式实现了许多非常规的生物医学操作模式。这将塑造出一种具有许多优势的高度有益的技术，这些技术有别于传统的开放手术。这篇综述致力于根据其独特的特性，系统地拟定液态金属启用的可注射生物医学技术的新领域，总结近期的代表性发展和相关的生物医学进展。将介绍最新的材料，技术和设备。还将讨论科学机遇和挑战。作为新兴的可注射生物材料，液态金属的基本原理，技术和潜在应用将赋予可注射操作以满足紧急的生物医学需求并刺激沿着这一关键方向的进一步努力。技术和设备将得到解释。还将讨论科学机遇和挑战。作为新兴的可注射生物材料，液态金属的基本原理，技术和潜在应用将赋予可注射操作以满足紧急的生物医学需求并刺激沿着这一关键方向的进一步努力。技术和设备将得到解释。还将讨论科学机遇和挑战。作为新兴的可注射生物材料，液态金属的基本原理，技术和潜在应用将赋予可注射操作以满足紧急的生物医学需求并刺激沿着这一关键方向的进一步努力。