Abstract: With the help of magnetization machine, wheat seeds were treated in different magnetization field intensities. The field experiments showed that proper magnetic field intensities could increase wheat yields greatly, and a maximum yield increasing margin in rainfed land is as high as 18. 5%. Also, magnetizing could enhance seed photosynthesis intensity and respiration intensity as well as the activity of enzyme. Moreover, statistics analysis of experiment data, including curvilinear regression, variance analysis and multiple comparison, was carried out on a computer, which detei mined the optimum magnetic field intensity and its regulation range.