A novel scheme is proposed to form double-well magneto-optical surface trap for cold atoms using double U-shaped current-carrying wires. It shows that the double-well magnetic trap proposed here could be continuously transfered into a single one by adjusting the current in an inner U-shaped wire from a suitable value to zero, and vice versa. The spatial distributions of magnetic fields from double U-shaped current-carrying wires layout and their gradients are calculated and analyzed. It is found that the magnetic field gradient near the center of each magnetic trap generated by the double U-shaped wires is about 1.5×10-3～2.5 ×10-3T/cm when the currents in the double U-shaped wires are both equal to 600 A and the inhomogeneous bias magnetic field in z-direction is -4.0 ×10-3T. By associating with 3D optical Molasses beams used in the usual magneto-optical trap (MOT), the double-well magneto-optical surface trap can be used to realize double-well MOT near the surface of wire plane. Under the approximation of low intensity, a cold atomic sample with a captured number of ～106 atoms at a temperature of about 270 μK can be obtained in each 85Rb atomic MOT. Since each MOT in two-species MOT can be prepared independently, the controllable double-well trap can be used to study the cold collisions between two different atomic samples.