Content abstract: In 2007, China's capital market entered the era of full circulation. Under full circulation, insider trading may become more serious than when there was equity separation. Therefore, it is necessary to effectively guard against major shareholders and another type of positional factors related to the relative position (distance) of a public good compared to residents. This factor is converted into an index represented by the travel radius of residents for analysis. Conclusion. ∴°★ Siqi ☆°. ★···