Due to environmental pollution, calligraphy and painting are greatly damaged. Especially in cities, automobile exhaust and industrial pollution make the content of acid and alkali in the air relatively high. Harmful gases and fine dust are suspended in the air and deposited on the picture over time, which will erode the picture. Generally speaking, it is better to remove dust once a month, which can be extended or shortened according to seasonal changes. So how to deal with the dust after the hanging exhibition? Let's introduce it to you.

1、可用电吹风的自然风，将出风口与画面成30度角，保持10厘米15厘米的距离，从右向左清扫；或将吸尘器开到低风，配以软毛刷清扫，在清扫的过程中用吸尘器将尘埃吸走。使用此法要特别注意吸嘴与画面的距离以及吸力的大小，以免误伤作品。

1. You can use the natural wind of the hair dryer to make the air outlet and the picture at an angle of 30 degrees, maintain a distance of 10 cm to 15 cm, and clean from the right to the left; or turn the vacuum cleaner to low wind and use a soft brush to clean, and then use a vacuum cleaner to absorb the dust during the cleaning process. When using this method, special attention should be paid to the distance between the suction nozzle and the screen as well as the size of the suction force, so as to avoid damaging the works by mistake.

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2、可用鸡毛掸轻轻清扫画面。切不可用抹布一类物品擦拭画面，因为在擦拭的过程中，细小灰尘会进入纸张的纹里，造成更大的损害。

2. Use feather duster to gently clean the picture. Do not use rags and other items to wipe the screen, because in the process of wiping, small dust will enter the paper grain, causing greater damage.

挂展一年以2次为宜，一次一到两个月。其余时间应该收藏。藏置环境要严格要求。是防虫、防潮、防火，其次是控制和调节存放环境的温、湿度，切忌高温、高湿、重压存放环境要求书画箱柜的密封性要好，使保存环境相对稳定。

It is advisable to hold exhibitions twice a year for one to two months. The rest of the time should be collected. The storage environment should be strict. The first is to prevent insects, moisture, fire, and then to control and adjust the temperature and humidity of the storage environment. Avoid high temperature, high humidity and heavy pressure storage environment. It is required that the sealing of painting and calligraphy boxes should be good, so that the preservation environment is relatively stable.

以上就是关于字画挂展后尘土的处理方式，希望可以帮助到大家。

The above is about how to deal with the dust after the exhibition. I hope it can help you.