The invention relates to a dinuclear organic metal ruthenium compound. The invention further provides application of a composite solution of the dinuclear organic metal ruthenium compound and gamma-cyclodextrin to microcontact printing technology. By dissolving the gamma-cyclodextrin with water, a gamma-cyclodextrin water solution with the concentration of 3-6g/L is obtained, 0.8g of dinuclear organic metal ruthenium compound is added into each liter of the gamma-cyclodextrin water solution, an ultrasonic instrument is used for performing ultrasound treatment for 30-60 min after the frequency is adjusted to 20kHz, and the uniformly dispersed composite solution of the gamma-cyclodextrin and dinuclear organic metal ruthenium compound is obtained, and is used for soaking a PDMS stamp and stamping on a carboxylation substrate for chemical plating. A metal pattern is prepared at the surface of a polymer substrate commonly used by microcontact printing ink in an electronic industry, and a new thought is provided for the microcontact printing technology.