The utility model belongs to the technical field of building structure engineering and particularly relates to an existing concrete column and added steel girder connection joint. The existing concrete column and added steel girder connection joint comprises an existing concrete column, a steel plate surrounding sleeve and added steel girders; the existing concrete column is sleeved with the steel plate surrounding sleeve; the steel plate surrounding sleeve is fixed on the existing concrete column by a plurality of high-intensity screws; a structural adhesive layer is poured between the existing concrete column and the steel plate surrounding sleeve; the cross section of the steel plate surrounding sleeve is of a quadrangle shape; the added steel girders are respectively welded around the steel plate surrounding sleeve. The existing concrete column and added steel girder connection joint disclosed by the utility model has the beneficial effects that the problem of connection between the added steel girders and the existing concrete column is solved; the joint has good integrality and anti-seismic property; the design concepts of strengthening the joint and weakening components are implemented; the existing concrete column and added steel girder connection joint is convenient for field construction and is low in cost.