The parental sources and breeding process of the maize variety Luoyu 198 were introduced, and its agronomic traits, disease resistance, quality and yield were comprehensively analyzed based on its performance in the Henan Province science-enterprise win-win corn consortium trials. The variety was developed by crossing the female parent L198X with the male parent Z198Y to create a high yielding maize hybrid, the variety was approved by the Henan Provincial Crop Variety Approval Committee in 2022 (Approval No. Yushenyu 20220046). In terms of characteristics, the variety was tested in the regional and production trials of the Henan Province science-enterprise win-win corn consortium from 2020 to 2021. Under summer sowing conditions in the study area, its growth period ranged from 99.9 to 103.4 days, and its plant height varied between 249.3 and 276.5 cm, with good field performance. Through inoculation identification, the variety was found to be resistant to southern corn leaf blight and fusarium ear rot. The protein content of its kernels ranged from 9.39% to 9.89%, the crude starch content ranged from 75.11% to 75.32%, indicating high quality. The average yield of Luoyu 198 was recorded between 8 080.05 and 10 876.80 kg/hm², representing a yield increase of 9.32% to 12.55% compared to the control variety Zhengdan 958. With a high yield increasing rate and a low coefficient of variation, the variety demonstrated excellent high yield potential, stability, and adaptability. This study provides a reference for the large scale promotion and cultivation of this variety.