Combining with the engineering examples, this paper introduced the main materials, equipment requirements and site construction technology key points, quality control etc. of SY expanded and vitrified small balls insulation fire fighting and crack resistance mortar, and elabo-rated the technique economic benefits and social benefits of SY expanded and vitrified small balls insulation fire fighting and crack resistance mor-tar, in order to promote its popularization and application.%结合工程实例，重点介绍了SY膨胀玻化微珠保温防火抗裂砂浆的主要材料、机具要求和现场施工技术要点、质量控制等，并阐述了SY膨胀玻化微珠保温防火抗裂砂浆的技术经济及社会效益，以促进其推广应用。
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