水下的特殊环境决定了水下切割技术的困难性和复杂性，尤其是三危场合下的切割将史加困难，高压水射流作为一种新型的“软、冷”切割技术具有独特的优点。本文若重分析了纯水射流、浆体射流、前与后混合磨料射流的优缺点及发展方向。 Underwater special environment determines the difficulty and complexity of underwater cutting technology, especially in the case of three critical occasions will be difficult to cut, high pressure water jet as a new type of “soft, cold” cutting technology has unique advantages . This article if re-analysis of pure water jet, slurry jet, the advantages and disadvantages of the front and rear mixed abrasive jet and the development direction.