TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preparation (Claimed): The preparation of (I) by wet-processing, comprises: (a) taking silicate mineral clay, sodium hydroxide or potassium hydroxide, carbon disulfide and water in a weight ratio of 1:(0.08- 0.6):(0.15-1):(1-3) as raw materials, in which the particle size of silicate mineral clay is greater than 80 meshes; (b) adding water and sodium hydroxide or potassium hydroxide into a stirred tank reaction kettle, stirring and dissolving, adding carbon disulfide liquid, controlling temperature at 5-30 degrees C, stirring and adding silicate mineral clay, continuing stirring for 5-30 minutes and uniformly mixing, reacting at 5-45 degrees C; and (c) filling the mixture prepared in the step (b) directly into at least one of sealed containers, storing at 5-45 degrees C and curing for more than 2 hours to obtain a pasty product. Preferred Method: The wet-process preparation method of the clay-based xanthogenate according to claims 1 to 2, comprising the following steps: (a) taking silicate mineral clay, sodium hydroxide or potassium hydroxide, carbon disulfide and water as raw materials, breaking sodium hydroxide or potassium hydroxide in to greater than 60 meshes; (b) adding all the raw materials in to high-speed cooling kneader, controlling reaction temperature less than 45 degrees C, stirring for 5-30 minutes and uniformly mixing to obtain a solid product; and (c) storing the solid product obtained in the step (b) at 5-45 degrees C, carrying out curing reaction for more than 2 hours to obtain the solid product. The preparation of (I) further comprises: (d) drying naturally at room temperature, dehydrating and drying by using a centrifugal machine at room temperature or drying in vacuum in a sealing tank to obtain a solid product, drying at a temperature greater than 50 degrees C, roasting, screening and packaging the obtained solid clay-based xanthogenate. Preferred Components: The silicate mineral clay is kaolinite clay, bentonite clay, illite clay, talc clay, pyrophyllite clay, mica clay, asbestos clay, tremolite clay, vermiculite clay, zeolite clay, sepiolite clay, attapulgite clay, rectorite clay, tourmaline clay or kieselguhr clay.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The sodium hydroxide or potassium hydroxide is solid powder, solid flake or industrial liquid sodium hydroxide or potassium hydroxide.