A new complex chaotic system was presented .Some of its basic dynamical properties,such as symmetry,dissipation,Lypanov exponents and chaotic attractors,were studied. The synchronization was achieved through design controller based on the passive control.The validity of this synchronous method was theoretically proved by Lyapunov method and the passive control theoty.Finally,a simulation was conducted with Matlab to prove the synchronization of the complex chaotic system. Simulation results show that the synchronization can be achieved quickly and well.