1、气候条件：外墙清洗必须要在良好的气候条件下进行，风力应小于4级，4级以上停止工作。因此，工作前应测定风力，尤其是高空风力。另外，下雨、下雪、有雾、能见度差以及高温（36℃以上）和低温(0℃以下)等条件下都不适合进行外墙清洗。 Climatic conditions: the exterior wall cleaning must be carried out under favorable climate conditions, the wind should be less than 4, and the above 4 levels should be stopped working. As a result, wind should be measured before work, especially in high winds. In addition, rain, snow, fog, poor visibility, and high temperature (36 ℃ or above) and low temperature (below 0 ℃) and other conditions are not suitable for external wall cleaning.     2、人员条件：为了贯彻执行国家安全法规，确保工人人身安全及设备正常运转，规定：高空操作者必须是年满18周岁的男性公民，并经过身体检查和安全技术培训，经考试合格方可作业，工人上岗前不得饮酒，有感冒等身体不适症状就暂停高空作业。 2, personnel requirements: in order to carry out national security laws and regulations, ensure the normal working of workers' personal safety and equipment, the provision: the operator must be a high male citizens over the age of 18, and through physical examination and safety technology training, the examination before operation, workers, not drink wine before mount guard, have a cold feeling unwell symptom such as aerial work is suspended.     3、设备条件：外墙清洗的设备必须处于良好的工作状态，凡吊板有发毛、部分绳股渐裂等现象应立即更换新绳。 3, equipment condition: external wall cleaning equipment must be in good working condition, anyone who has hair hanging plate, part of the rope gradually crack phenomenon such as new line should be replaced immediately.