Copper hydroxide dry flowable and preparation method

The invention relates to a cupric hydroxide dry suspending agent and a preparation method thereof. The cupric hydroxide dry suspending agent comprises the following components in percentage by weight: 10-80% of cupric hydroxide powder, 5-30% of dispersing agent, 1-5% of wetting agent, 1-20% of disintegrant, 1-10% of bonding agent, 1-5% of adhesive and 1-5% of film former. The preparation components of the cupric hydroxide dry suspending agent can be effectively and uniformly attached to the crop surface and form a compact protective film on leaves; and thus, the cupric hydroxide dry suspending agent has the advantages of rainfall erosion resistance and high drug effect durability, and can efficiently prevent and remove bacterial diseases and fungus diseases of crops. The cupric hydroxide dry suspending agent can be used as an effective component of a copper preparation to effectively avoid the defect of partial scorching and chemical injury of crops since the Bordeaux mixture and other cupric hydroxide preparations can not easily control the copper ion distribution.