The drugs price expensive, the drugs expense burden is heavy has become the serious social question which the influence harmonious society constructs. The article has analyzed the drugs price expensive reason and the movement mechanism from two stratification planes, pointed out the drugs price expensive surface layer reason mainly is drugs income addition system backwardness, doctor the occupational ethics landslide, drugs production circulation disorder, the government price administration out of control and the false drugs advertisement is in flood. The deep level reason mainly manifests for the national health resources overall deficient, the structural configuration is unbalanced, the control section role flaw and social medical service safeguard system incompleteness.