Environmental-friendly thiamethoxam water-soluble powder and preparation method thereof

The invention provides environmental-friendly thiamethoxam water-soluble powder. The environmental-friendly thiamethoxam water-soluble powder contains the following ingredients in parts by weight: 1-5 weight of thiamethoxam and 1-10 parts of action agent A; preferably, the environmental-friendly thiamethoxam water-soluble powder can also contain one or more of an action agent B, a functional agent and pesticide auxiliaries, wherein the action agent A is one or more selected from sulfonic acid group containing anionic surfactant, sulfuric acid group containing anionic surfactant and carboxylic acid group containing anionic surfactant; the action agent B is selected from non-ionic surfactant and/or natural macromolecular surfactant. According to the environmental-friendly thiamethoxam water-soluble powder provided by the invention, a preparation method of the environmental-friendly thiamethoxam water-soluble powder is simple, and a solution, which is homogeneous and thermodynamically stable, is obtained after the water-soluble powder is dissolved into water.