Abstract:Luggage and postal items are usually subject to relatively loose regulatory policies when going in and out of the customs due to their “non-trade and non-profit” properties. Criminals use the loopholes in supervision to profit from these so-called non-trade items, which has serious impact on national revenue, market order, ecological safety, and the image of the customs. From the historical evolution in this regard, the customs carries out the functions of enforcement of bans, inspection, recording, and protection, which has given much convenience to overseas Chinese going in and out mainland China and greatly promoted the economic and cultural exchanges between China and other countries. Unfortunately, these functions cannot always be properly carried out due to the subjectivity of law enforcement, ever-changing situations, and lagging technologies. To create a harmonious win-win ecological environment for the customs, at national level, we need to improve the legislative system and the top-level design, publicize core values, strengthen ideological and moral construction, and build up credibility system. At the customs level, we need to integrate regulatory elements, innovate regulatory models, improve the level of informationization and internationalization. For individuals and enterprises, it is necessary for them to raise awareness of responsibilities and law, and strive to set a good example.