Because environmental pollution is very harmful to calligraphy and painting, 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 suspended in the air, deposited on the screen over time, will erode the screen. Generally speaking, it is better to remove dust once a month, and it can be appropriately extended or shortened according to seasonal changes.

除尘方法：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）；也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。

Dust removal method: the natural wind of the electric blower can be used to make the air outlet form a 30 degree angle with the picture, keep a distance of 10 cm to 15 cm, and clean from right to left; Or turn the vacuum cleaner to low wind, clean it with a soft brush, and use the vacuum cleaner to suck away the dust during the cleaning process (pay special attention to the distance between the suction nozzle and the picture, and the size of suction, so as not to hurt the work by mistake); You can also use a feather duster to clean the picture. Do not use cloth to wipe the picture, because in the process of wiping, fine dust will enter the grain of the paper, 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。蠹鱼（也称衣鱼、纸鱼）是无翅昆虫，一般蛀食书画表面，特别危害糨糊粘贴处。烟草甲的幼虫对书画危害很大，喜欢在书画中打洞，而自身藏于洞内。一般书画防虫多用驱避剂，常用的有卫生球、樟脑丸、对二氯化苯，这些物品都是白色固体，易于挥发，其中对二氯化苯杀虫能力较强。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 better to hold exhibitions twice a year, one to two months at a time. The rest of the time should be collected. The storage environment should be strict. The first is to prevent insects, moisture and fire. The second is to control and adjust the temperature and humidity of the storage environment. Avoid high temperature, high humidity and heavy pressure. Bark beetles (also known as clothed fish and paper fish) are wingless insects, which generally eat the surface of calligraphy and painting, especially the paste paste. Tobacco beetle larvae do great harm to painting and calligraphy. They like to make holes in painting and calligraphy, but hide themselves in the holes. Generally speaking, repellents are commonly used in painting and calligraphy, such as sanitary balls, camphor balls, and p-dichlorobenzene. These articles are white solid and easy to volatilize, among which p-dichlorobenzene has strong insecticidal ability. The storage environment requires that the seal of the painting and calligraphy cabinet should be good, so that the storage environment is relatively stable.

木箱以樟木为佳，因樟木本身就可防蛀，且密封性好。无论用哪种箱柜，都要把字画悬空放置，下面留出空间放置干燥剂、防虫剂。这些试剂都应当用布或透气性较好的纸包起来，不可直接接触书画。若要移动或运输字画，千万不能直接移动或搬运箱柜，而应打开箱柜，取出药品，并将字画固定好，避免字画在箱内相互碰撞。根据大量的实验证明，字画适宜的保存温度为14℃18℃之间，合适的相对湿度为50％60％，这样的条件，不利于微生物、霉菌的生长和繁殖。控制湿度，主要用干燥剂变色硅胶或无水氯化钙。控制温度，则可用空调调节室内温度。

Camphor is the best wood box, because camphor itself can be mothproof, and good sealing. No matter what kind of cabinet is used, the calligraphy and painting should be placed in the air, and the space below should be reserved for desiccant and insect repellent. These reagents should be wrapped in cloth or paper with good air permeability, and should not be in direct contact with calligraphy and painting. If you want to move or transport calligraphy and paintings, you must not directly move or carry the cabinet. Instead, you should open the cabinet, take out the medicine, and fix the calligraphy and paintings well to avoid the collision of calligraphy and paintings in the box. According to a large number of experiments, the suitable storage temperature of calligraphy and painting is between 14 ℃ and 18 ℃, and the suitable relative humidity is 50% to 60%. Such conditions are not conducive to the growth and reproduction of microorganisms and molds. Control humidity, mainly with desiccant silica gel or anhydrous calcium chloride. If the temperature is controlled, the indoor temperature can be adjusted by air conditioning.