The research focuses on the relationship between public law-abiding behavior and Government News Release. The result shows: (1) Due to the lack of Normative Information, the promotion effect of the news release on the public law-abiding behavior is weak at present. (2) The motivation of public law-abiding can be attributed to two factors: instrumental motivation and normative motivation. Normative motivation has significantly and positively predictive effect on law-abiding behavior. (3) At present, public normative motivation is in a high level, but the main content in news release which intends to enhance public law-abiding behavior is instrumental information. We suggest that the department improve the effect of news release on public law-abiding behavior.