Ptype metallic electrode in IIIV microcavity lasers traditionally adopt the TiPtAu alloys mode, while the Ti layer has a strong optical absorption for the laser at the communication wavelength 1 550 nm, which is not suitable for the application in photonic integration. In order to replace the traditional alloy method, this paper calculates the optical model quality factor in the microcavity under the constraints of single metal Al and Ag metal using analytical method, and found that these two new electrodes have smaller optical losses. In addition, experiments were carried out on the microcavity lasers with electrodes of metal Al and Ag, respectively, and the results were well consistent with the theoretical predictions. Moreover, the two electrodes are cheap, simple and compatible with CMOS process, so they have high application prospects in photonic integration.