The invention discloses an outer holding strip assembly of an automobile door, which comprises an outer holding strip body, wherein the outer holding strip body consists of a framework of which the cross section is inverted U-shaped and a lip edge, the lip edge is integrated with the framework and is positioned on one side of the framework; the upper part of a clamp is also inverted U-shaped; theclamp is provided with an overhead hook, elastic clamping teeth, an inner neck and an outer neck; the clamp is arranged in an inverted U-shaped clamping groove of the outer holding strip body; and the overhead hook at the left lower end of the clamp is in interference fit with the left lower end of the framework, and the outer neck on the right outer side is in interference fit with the right lower end of the framework to ensure that the clamp and the outer holding strip body are combined into a whole body. The outer holding strip assembly of the automobile door has the following obvious advantages that: because of the special structure of the clamp, the outer holding strip body is reliably arranged on the automobile door and has stable performance; the outer holding strip body cannot be dismounted under the condition that the automobile door is locked and the automobile window glass is raised to ensure that the outer holding strip body has a strong anti-theft function; and the outer holding strip body is well matched with an automobile body metal plate, and not only improves the sealability but also makes the automobile body beautiful and smooth.