Gypsum powder and putty powder are not the same material. Gypsum powder is mainly used for caulking, filling holes and straightening internal and external corners. Its particles are rough, hard and hard after setting, and the setting speed is fast. Putty powder is mainly used for priming, with slow setting speed, soft texture after setting, and easy to polish with sandpaper. It is a good priming material before brushing emulsion paint.

石膏粉通常为白色、无色，无色透明晶体称为透石膏，有时因含杂质而成灰、浅黄、浅褐等色。条痕白色。透明。玻璃光泽，解理面珍珠光泽，纤维状集合体丝绢光泽。解理极完全，和中等，解理片裂成面夹角为66和114的菱形体。性脆。硬度1.5~2。不同方向稍有变化。相对密度2.3。

Gypsum powder is usually white, colorless, colorless and transparent crystal, which is called transparent gypsum. Sometimes it is gray, light yellow, light brown and other colors due to impurities. Stripes white. Transparent. Glass luster, cleavage surface pearl luster, fibrous aggregate silk luster. The cleavage is very complete and moderate, and the cleavage pieces are split into rhomboids with an included angle of 66 and 114. Brittle. Hardness 1.5 ~ 2. There is a slight change in different directions. Relative density 2.3.

石膏粉是五大凝胶材料之一，在国民经济中占有重要的地位，广泛用于建筑、建材、工业模具和艺术模型、化学工业及农业、食品加工和医药美容等众多应用领域，是一种重要的工业原材料。

Gypsum powder is one of the five major gel materials. It plays an important role in the national economy. It is widely used in building, building materials, industrial molds and art models, chemical industry and agriculture, food processing and medical beauty, and so on. It is an important industrial raw material.

腻子粉是建筑装饰材料的一种，主要成分是滑石粉和胶水。 刚刚购置的毛坯房表面的一层白色——腻子，通常腻子的白度在90以上细度在330以上。

Putty powder is a kind of building decoration material. Its main components are talcum powder and glue. A layer of white putty on the surface of the blank house just purchased, usually the whiteness of the putty is more than 90 and the fineness is more than 330.

腻子是用来墙面修补找平的一种基材，为下一步装饰（刷油漆贴壁纸）打下良好的基础。腻子分为内墙和外墙两种，外墙腻子要抵抗风吹日晒所以胶性大、强度高，环保指数稍低。内墙腻子综合指数较好，健康环保，所以内墙不外用，外墙不内用。

Putty is a kind of base material used for wall repairing and leveling, which lays a good foundation for the next decoration (painting and pasting wallpaper). Putty can be divided into interior wall and exterior wall. The exterior wall putty should be resistant to wind and sun, so it has high adhesive property, high strength and low environmental protection index. The comprehensive index of putty for interior wall is good, healthy and environmental protection, so the interior wall is not used externally, and the exterior wall is not used internally.

通常腻子是石膏或者水泥基的，这样表面粗糙比较容易粘接牢固。但是在施工的时候还是要在基层上涂刷一层界面剂来封固基层同时提高墙面的附着力，让腻子能够更好的粘结在基面上。

Usually the putty is gypsum or cement-based, so the surface is rough and easy to bond. But in the construction, it is still necessary to brush a layer of interface agent on the base to seal the base and improve the adhesion of the wall, so that the putty can be better bonded on the base.