This Article attempts to observe and analyze the effects of preventing stalking behavior and its problems after the Stalking and Harassment Prevention Act comes into force on June 1, 2022, through official statistics and academic and practical views. After analyzing those data, this Article clarifies that although the written warning has its effect, it is still necessary to find a way to solve the problem of Unprotected periods between the written warning and the Restraining Order, and the effect of the Restraining Order partly relies on the cooperation of government agencies. In the discussion of the offence of stalking, this article is skeptical of the practical view that sex or gender should be interpreted in the broadest sense, and attempts to provide a personal view on the legal benefits of the offence of stalking.