With ever increasing wind power penetration and air conditioning load

the peak to valley difference of the daily load has exhibited to be upward

and this may cause significant negative impacts on the secure and economic operation of the power system concerned. Taking the PJM（Pennsylvania New Jersey Maryland）demand response market as the major study object

the demand response model in electricity markets aboard is first analyzed

and the project types

results and deficiencies of the domestic demand response pilot projects are briefly described. Then

mandatory components in a demand response market are clarified.Based on the experience of demand response markets aboard

the commercial mechanism in Guangdong electricity market is proposed

taking the development status and relevant policies into consideration. Finally

the corresponding market structure is designed to provide referene for the development of demand response in other parts of the country.