The utility model discloses a nucleating agent parallel flow dropwise adding device. Tank body, a tank cover is arranged at the top of the tank body in a matching manner; a first motor is arranged inthe center of the top of the tank cover; an output shaft of the first motor penetrates through the tank cover; the end part of the stirring shaft is fixedly connected with a first stirring rod; the first stirring rod is arranged in the tank body; a stirring tank is arranged on one side of the first motor, a second motor is arranged in the center of the top of the stirring tank, a second stirring rod is connected to the end of an output shaft of the second motor, the second stirring rod is arranged in the stirring tank, a discharging hopper is connected to the top of the stirring tank, and thestirring tank is communicated with the tank body through a connecting pipe. According to the utility model, after the nucleating agent is fully mixed by the motor, the mixed nucleating agent is fullystirred and dissolved by the motor, so that on one hand, the mixing degree of the nucleating agent solution can be greatly improved, and on the other hand, the working intensity of operators can be reduced.