本发明公开了一种表面负载有可见光响应光催化涂层的镀锌钢板及其制造方法，属于新型建筑材料领域。它包括镀锌钢板、钝化皮膜和光催化涂层。本发明在镀锌钢板的至少一个表面涂覆钝化皮膜，在钝化皮膜上层叠含氮掺杂改性的二氧化钛纳米粒子的光催化涂层，钝化皮膜能保护镀锌钢板不被腐蚀，光催化涂层可以在可见光响应下去除空气中的有机物和氮氧化物，在提高镀锌钢材的使用寿命的同时，还能起到净化空气的作用。

The invention discloses a galvanized steel plate with a visible light-responsive photocatalytic coating on the surface and a manufacturing method thereof, and belongs to the field of new building materials. The galvanized steel plate comprises a galvanized steel plate body, a passivation film and a photocatalytic coating. According to the galvanized steel plate, at least one surface of the galvanized steel plate body is coated with the passivation film, and the nitrogen-doped modified photocatalytic coating is laminated on the passivation film; the passivation film can protect the galvanized steel plate from being corroded; the photocatalytic coating can remove organic matters and nitric oxide from air under visible light response, so that the service life of the galvanized steel plate isprolonged, and an effect of purifying the air is achieved.