The invention discloses a combined mounting bracket of an automobile oil tube. The combined mounting bracket of the automobile oil tube comprises a strip-shaped supporting plate. Rectangular groove holes are formed in the two sides of the supporting plate. Elastic plates which incline towards the positions below the two ends of the supporting plate are formed on the outer side walls of the rectangular groove holes of the supporting plate in a bent manner. A conical support plate is arranged on the upper side of the middle of the supporting plate. Horizontal connecting plates are formed at thetwo ends of the support plate. Buckle plates are formed on the two sides of the connecting plates. Each buckle plate is in the shape of a right angled C. The buckle plates are connected with the sideedges of the supporting plate in an inserted manner. Installation holes are formed in the connecting plates and distribute over the rectangular groove holes of the supporting plate respectively. Opengrooves are formed in the two sides of the support plate. A clamping plate is formed on the upper side wall of each open groove. The lower end of each clamping plate abuts against the inner side wallof the corresponding rectangular groove hole of the supporting plate in a pressing manner. The combined mounting bracket of the automobile oil tube is simple in structure, and can realize damping on the oil tube, the noise is lowered, and oil leakage is less; and meanwhile, because the support is a stamping part, the support is convenient to make and high in production effect, and facilitates installation of the oil tube.