This issue intends to introduce secondary electron emission characteristic as a new parameter to describe the performance of Static electricity on solid materials in accordance with related existed theories, and try to explain the course of electrification by using above idea; Six kinds of representative solid materials are picked up as experimental samples(including conductor, semiconductor and insulator), and we have conducted four groups of friction experiments among those five solid materials and one friction electrification experiment at different speed among three kinds of materials; In this experiment, we have discussed the relevance mechanism between solid material electrostatic potential and its secondary electron emission characteristic in the course of electrostatic electrification. We hope this study will contribute to open a new way to electrostatic electrification theory.