A car luggage rack comprises a left luggage rack and a right luggage rack in a symmetrical structure, The left luggage rack comprises a luggage rack main body, wherein the luggage rack main body is anintegrally formed structure made of aluminum alloy, the upper surface of the luggage rack main body is streamlined along the length direction, a front mounting hole is arranged in the front part of the luggage rack main body, a middle mounting hole is arranged in the middle part of the luggage rack main body, and a rear mounting hole is arranged in the rear part of the luggage rack main body; Theouter side of the section of the luggage rack main body is formed into an S-shaped structure by continuous arc lines, the upper part of the inner side of the section of the luggage rack main body forms a convex body inward, and the top surface of the luggage rack main body is a slope plane with the high inner side and the low outer side. The invention has the advantages of convenient processing,good overall strength, strong bearing capacity, small wind resistance, S-shaped structure on the outer side of the section to make the appearance more beautiful and generous, and a convex body on theinner side to further increase the strength of the luggage rack.