The invention discloses an electric energy measuring system and a method for a grid-connected type wind-light combined power generation system. The electric energy measuring system comprises a photovoltaic array and a wind power generation array, wherein each output end of the photovoltaic array is respectively communicated with an input end of a corresponding inverter; the output end of the inverter is communicated with the input end of a box type transformer; each output end of the wind power generation array is respectively communicated with the input end of the corresponding box type transformer; the output end of the box type transformer is communicated with the input end of a coil cabinet of a booster station; the output end of the booster station is communicated with a public supply network of an opposite terminal transformer substation; a branch electric energy meter and a voltage current transformer are arranged between each box type transformer and the coil cabinet of the booster station; output ends of the branch electric energy meter and the voltage current transformer are connected with a collecting terminal; a gateway electric energy meter and the voltage current transformer are arranged in the coil cabinet of the opposite terminal transformer substation; the output ends of the gateway electric energy meter and the voltage current transformer are connected with the collecting terminal; the output end of the collecting terminal is communicated with a master control server.