A scheme of controlled dense coding was proposed by using non-symmetric quantum channel in 3×2×2 dimensional entangled state. The collapse of the state and entanglement between Alice and Bob were controlled by Charlie’s local measurement on his particle in two dimension. Then the 3×2 dimensional non-symmetric quantum channel was controlled. It can be seen that the average amount of transmitted information of dense coding was controlled by Charlie’s measurement angle. One can find that the average amount of information is more than 2 bits by using maximally entangled state in the non-symmetric quantum channel. Thus, this scheme is high-efficiency. In the case the entanglement is non-maximally, the transmitted information is determined by the measurement angle θ and the coefficient β of the entangled state.