Along with electricity market deregulation, management of power quality suffers more and more pressure from economic and social equity. It is necessary to establish Power Quality Market (PQM) to assure social equity and improve social integrated benefit. Based on the operation and deal characteristics of PQM, this paper explains the basic framework and functions of PQM system, and disassembles the PQM system into three kinds of market: electromagnetic pollution emission right trading market, power quality service market, power quality technology and information trading market. And those markets are explained in six primary market elements such as market participator, market object, market carrier, market price, market regulation and market supervising. Then the characteristics of PQM system are summarized. The organizations and functions of market supervising department are explained. Some emphasis and difficulty of technology that support PQM are proposed. Finally the keys of PQM existing, progressing and running effectively are discussed.