Even if society strives to provide an equal opportunity system, people will still form an income gap in the initial distribution. Since capital in the market economy also needs to be paid, people who own capital can also get paid by owning capital. This is even greater. The income gap in the initial distribution. Therefore, after the market economy system is adopted, in order to reduce the income distribution gap, the gap formed in the primary distribution must be reduced through the redistribution process led by the state; otherwise, the income distribution gap will be reduced. Large, the formation of excessive differentiation and conflict of social classes, leading to the contradiction of public surplus. This text mainly talks about:. ['The income balance is difficult to achieve.', 'The redistribution process is essential.', 'Distribution gap stems from institutions.', 'Income distribution system must be reformed.']