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(35℃以上)和低温(0℃以下)等条件下都不适合进行外墙清洗。 1, climate conditions: external wall cleaning must be carried out under good climate conditions, and the wind force should be less than 4 level, and 4 level or above should be stopped. Therefore, we should measure the wind force before the work, especially the high-altitude wind force. In addition, rain, snow, fog, poor visibility and high temperature (above 35 degrees) and low temperature (below 0 degrees Celsius) are not suitable for exterior 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 conditions: in order to carry out the national safety regulations and ensure the safety of the workers and the normal operation of the equipment, the high altitude operator must be a male citizen of 18 years of age, and through the physical examination and the training of safety and technology, the workers are qualified to work through the examination. The workers are not allowed to drink alcohol before the job, and there are cold and other physical discomfort. The symptoms are suspended at high altitude. 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: the equipment for external wall cleaning must be in a good working condition. Any suspension plate must be hairy and part of strand strand cracking. New rope should be replaced immediately.