The invention discloses a uniform linear array microstrip antenna. The uniform linear array microstrip antenna comprises an elongated base plate; a metal grounding layer is arranged on one surface of the elongated base plate; a plurality of microstrip radiating stickers are arranged into an array on the other surface of the base plate along the length direction of the base plate; a linear power distribution network is also arranged along the length direction of the base plate, wherein the power distribution network comprises secondary power distribution networks which are connected by an end-to-end manner; each secondary power distribution network is connected with each microstrip radiating sticker through an impedance conversion unit and a microstrip line. According to the uniform linear array microstrip antenna, a lower sidelobe is provided; an electric field of a receiving-transmitting antenna is rightly opposite in 180 degrees, which is beneficial for the improvement of isolation of the receiving-transmitting antenna; the antenna has the advantages that the main lobe is narrow, and the sidelobe is low in level and high in bandwidth.