The invention relates to a dual-compressor air-conditioning fuel balancing device, comprising parallel a first compressor and a second compressor connected on a refrigerating circuit, a gas balance tube and an oil balance tube connected between two compressors, an oil separator, a condenser, an electric expanding valve, an evaporator, and three electromagnetic valves. The total discharge tubes of two compressors are connected with the oil separator whose outlet tube is connected with the condenser and reflux tube is connected with a total air inlet tube of the compressors. One end of the condenser is connected with the condenser whose one end is connected with the expanding valve. One end of the expanding valve is connected with the condenser, while the outlet is serially connected with the evaporator whose one end is connected with the expanding valve and another end is connected with the total air inlet tube of the compressors. The invention can assure each compressor works long time at safe oil level, and build dynamic oil balance between compressors.