In order to eliminate pollution caused by the barium oxide and decrease the inhalable particulates, a new green flare composition was obtained by using copper oxide as oxidant and color substance, two kinds of organisms A,B as combustible. The proportion of ingredients CuO,A and B is 5∶1.8∶2 by weight. The color purity and the permeation percent are respectively higher 17% and 50% than that of traditional green flare composition under the same conditions, but the amounts of nitrogen dioxide and carbon monoxide and inhalable particulates decreased by 14%,50% and 2%. And the impacts of the content of copper oxide and two combustibles on the color purity and the smoke are studied. Results show that the pollution caused by barium salt can be eliminated using copper oxide as color substance; inhalable particulates can be decreased using organic substance as combustible.