This study examined the effects of water stress and plant density on faba bean plants. It was carried out in the Research and Experimental Centre, Faculty of Agriculture, Moshtohor, Benha University, Qaluibia Governorate, Egypt, over the course of two growing winter seasons (2022–2023, 2022–2023).Therefore, two field studies were conducted to investigate the effect of four different water regimes one, two, and three irrigations as well as conventional irrigations four regular, consecutive irrigations as a control applied at all vegetative and reproductive stages and at three plant densities of faba bean (Cv. Marriott 2) 20, 30 and 40 kg/fed. As compared to the growth metrics of the unstressed plants, the results demonstrated that an increase in the duration of water stress caused a drop in all growth parameters. Plant density also significantly affected a number of aspects throughout the two growing winter seasons (2022–2022, 2022–2023).The majority of the features were considerably impacted at the interaction level. While there were differences in the values of vegetative growth parameters, yield, and yield components, as well as in microbiological analysis with different water regimes and plant densities, the overall presentation of the faba bean was generally well-intentioned. The crop composition may be slightly delayed by a water deficit (three irrigation treatments) up to (3/4) of the water holding capacity, but this does not limit the crop's ability to adapt to anomalies in its growth composition. Additionally, in every attribute evaluated, faba beans performed well at the most advantageous plant density of 30 kg/fed.