Production method of solar grade czochralski monocrystalline silicon

The invention discloses a production method of solar grade czochralski monocrystalline silicon, relating to the technical field of czochralski monocrystalline silicon. The production method comprises eight steps, namely charging, melting, stabilizing temperature, seeding, shouldering, performing constant-diameter growth, ending and the like. In a seeding process, the method comprises the step of adjusting the crucible position to ensure that a distance between the liquid level of a silicone liquid and a flow guide cylinder is 28-32mm. The method disclosed by the invention is simple and convenient to operate and easy to implement, crystal defects possibly generated in a crystallization process can be effectively reduced, the problems of black chips and black corner sheets in czochralski monocrystalline silicon can be solved, the quality of monocrystals is remarkably improved, the service life of monocrystals can be remarkably prolonged, return of goods caused by product quality defects can be avoided, and unnecessary waste of money can be saved for enterprises.