一、长时间不对饮水机进行专业消毒;二、换水造成进水口与空气接触;三、存放空间狭小或不洁,空气不对流,地毯不常消毒;四、气温不适当;置于阴冷潮湿或阳光直射处,易导致细菌繁殖五、饮用水质不净或含菌;六、饮水机保养不够好,密封性差造成细菌入侵;七、水胆存入过多而长期不饮 First, a long time not to professional disinfection of drinking fountains; Second, the water inlet caused by contact with air; Third, the storage space is small or dirty, the air is not convection, the carpet is not often disinfected; Fourth, the temperature is not appropriate; Or direct sunlight, easily lead to bacterial growth Five, drinking water is not clean or bacteria; Six, drinking fountains not good enough, poor sealing caused by bacterial invasion;