The utility model relates to a production carboxylic styrene butadiene latex's agitating unit, install in the main shaft lower extreme including main shaft and stirring main part, stirring main part,the stirring main part includes that a plurality of L types stir the body, and each L type stirring body is equipped with concave arc -shaped groove including a horizontal agitating rod of level setting and a vertical stirring leaf of vertical setting, one side of horizontal agitating rod to the indent, forms a convex arc shape portion in the opposite side, horizontal installation has a novel stirring rake on the main shaft, and novel stirring rake includes the bent shape stirring leaf of upper arc stirring vane, intermediate level stirring leaf and lower floor, and upper arc stirring vane includes two arc simple leaves, and intermediate level stirring leaf includes two triangle -shaped stirring leaves, and the bent shape stirring leaf of upper arc stirring vane and lower floor is connected respectively to the upper end and the lower extreme of triangle -shaped stirring leaf, and the bent shape stirring leaf of lower floor includes two bent shape simple leaves, novel stirring rake is located the upside of vertical stirring leaf. Production carboxylic styrene butadiene latex's agitating unit can make the material intensive mixing, improves production efficiency.