Abstract: Objective The aim is to solve problems of high difficulty and risk in manufacturing of a high-density and large-area curved microstrip antenna by conformal welding. Methods By analyzing structural characteristics and technological difficulties of microstrip antenna, conformal welding process of curved microstrip antenna is studied from aspects of welding tooling design, solder preset design, welding method design and anti-welding deformation design. Conformal welding process of large-area curved microstrip antenna is obtained. Moreover, welding production and post-welding inspection of microstrip antenna samples are carried out. Results The results show that the welding process realizes conformal welding of high-density and large-area curved microstrip antenna. Conclusion The welding process has certain guiding significance for the welding of similar antenna.