Network effect, the policy on language and the market disorder of language abuse further consolidate the attribution of public goods of language. Language is public goods but language is not pure public goods and should be mainly supplied by government and by other secondary supply methods. The use of the language has the characteristics of obvious hierarchy, so the supply of the language should use classified supply methods. The language, as public goods, should sufficiently consider the preference and willing of using subjects in the process of supply. The adjustment of the language is a kind of embodiment of institutional evolution and should sufficiently consider its path dependence and should be brought into the cost of institutional evolution for the considering. The government, as a decisionmaker of language plan in mastered resources, should be neutral and reflect the willing of mainstream culture and mainstream users to maximum extent in the process of the game of language adjustment.