Based on the economic cycle theory, this paper studies the cycle logic structure, the characteristics of classified resources and the law of allocation, the premise of typical economic operation and the inequality of exchange between typical economies according to the characteristics of economic operation. According to the difference of driving forces, resource-labor economy and knowledge-capital economy are divided, and then the essential meaning of the double cycle, promoting factors, impediments, educational, scientific and technological system reform needs, international and domestic influences and decision-making conditions are discussed. Studies suggest that drive the dual cycle is knowledge and capital, to the dual cycle is both necessary and inevitable in our country, the driver development by innovation, make China economy sustainable, high quality and circulation as well as increase the road of development, make China enhance independence, autonomy, let the Chinese to enhance centripetal force, the self-confidence, let the world Multipolar competition progress, narrow the gap between rich and poor.