Conventional active seawater evaporation technologies, that is, they include components with mechanical moving parts, generally involve large plants with high capital and operating costs. Recently, the passive solar-driven interfacial evaporation (PSDIE) with no active parts is considered as one of the most promising solar energy utilization and freshwater acquisition way. Especially in isolated and impoverished off-grid areas, passive desalination with economic feasibility and reliability has great application prospects. Based on the effective optical-thermal control of evaporator design and reasonable arrangement of deployment scheme, thermal localization in the vapor-liquid interface is conducive to reducing the heat dissipation into the bulk water and significantly improving the efficiency of desalination. Nonetheless, the Achilles’ heel of the technology, namely the existence of salt accumulation at the photothermal interface under the condition of high intensity work including concentrated brine water and intense solar irradiation, which inevitably reduces the availability of fresh water resources and the service life of the evaporator. Addressing this issue is of the utmost importance and arduous task to maintain uninterrupted passive evaporator operation. In this review, the outline of the state-of-the-art self-propelling salt-blocking strategies in PSDIE is mainly divided into three categories, i.e. mechanical removal, shielding effect, and force-driven fluid flow. Finally, the challenges and prospects of salt resistance in PSDIE are emphasized, providing a roadmap for the future development of solar evaporation technology.

传统的主动海水蒸发技术，即它们包括具有机械运动部件的组件，通常涉及具有高资本和运营成本的大型工厂。最近，无活性部分的被动太阳能驱动界面蒸发（PSDIE）被认为是最有前途的太阳能利用和淡水获取方式之一。特别是在偏远贫困离网地区，具有经济可行性和可靠性的被动海水淡化具有很大的应用前景。基于蒸发器设计的有效光热控制和合理安排部署方案，汽液界面的热定位有利于减少向散装水中的散热，显着提高脱盐效率。尽管如此，该技术的致命弱点，即在浓盐水和强烈太阳辐射等高强度工作条件下，光热界面存在盐分堆积，不可避免地降低了淡水资源的可用性和蒸发器的使用寿命. 解决这个问题是维持无源蒸发器不间断运行的最重要和艰巨的任务。在这篇综述中，PSDIE 中最先进的自推进阻盐策略的概述主要分为三类，这不可避免地降低了淡水资源的可用性和蒸发器的使用寿命。解决这个问题是维持无源蒸发器不间断运行的最重要和艰巨的任务。在这篇综述中，PSDIE 中最先进的自推进阻盐策略的概述主要分为三类，这不可避免地降低了淡水资源的可用性和蒸发器的使用寿命。解决这个问题是维持无源蒸发器不间断运行的最重要和艰巨的任务。在这篇综述中，PSDIE 中最先进的自推进阻盐策略的概述主要分为三类，即机械去除、屏蔽效应和力驱动的流体流动。最后，强调了PSDIE中抗盐性的挑战和前景，为太阳能蒸发技术的未来发展提供了路线图。