The invention discloses a polycrystalline silicon intelligent production method and system. The polycrystalline silicon intelligent production method comprises the following steps of firstly, carryingout the digital research and development design, and using a simulation software for simulating the main equipment, core parts and relevant parameters in the polycrystalline silicon production; secondly, enabling the intelligent control execution system to operate, and input the result obtained through simulation analysis into the intelligent control execution system to operate; thirdly, performing big data analysis on the collected process data, performing comparison and artificial intelligence depth calculation by combining with the stored historical production process parameters, and obtaining an optimized analysis result; and 4, outputting the result, comparing the optimized analysis result with a predetermined target value, and outputting the result according to the comparison result. According to the present invention, the intelligent control of the polycrystalline silicon production is achieved, the high-efficiency optimization is achieved, and the purposes of reducing the consumption and improving the quality are achieved.