The invention provides a multi-knuckle joint multifunctional fixing rack. Articles such as mirrors, racks, navigators and automobile data recorders can be fixed in a fixing rack; length can be adjusted when a plurality of joints are connected with the mirrors, racks, navigators and automobile data recorders via a fixing device; with arrangements of projections and grooves on the knuckle joints and the joint fixing device, various angles can be adjusted; and rotation of the mirrors, racks, navigators and automobile data recorders due to external factors can be prevented; the multifunctional fixing rack comprises a fixing device (100) fixing articles on a wall or a vehicle, a first knuckle joint (300) with one end combined with a wall surface fixing device or an article fixing device, a second knuckle joint (500) combined with the first knuckle joint and enabling an article to rotate at 360-degree, and a connection knuckle joint fixing device (700) connected with the second knuckle joint or the first and second knuckles to prolong length.