The Egyptian alluvial soils had been formed by the sed-imentation of the suspended matter, which was carried by the an-nual flood during the most recent geological periods. Many farmers grow sugarcane intercropped with other crops. This agro-technique is expected to expand and gain popularity among farmers who grow spring sugarcane. The aim of this study is to find out competition influences resulting from intercropping mung bean with sugarcane on some agronomic traits and both yield in reltion to soil build up salinity and fertility under natural drainage conditions. Two field trials were conducted at Shandaweel experimental station during 2000/2001 and 2001/2002 seasons for intercropping mung bean, at various densities, with sugarcane. The soil is taxonomically Typic Torrifluvents and its texture varies between clay loam and loam. The optimum conditions of wa-ter table depth, soil salinity and soil fertility are main effective lectors on soil productivity of sugarcane yield and cultivation in-tensity. Mung bean intercropping had a positive effect on soil fer-tility as it increased the nitrogen and phosphorous in soil due to ni-trogen fixation and root activities. Relative yield of sugarcane was larger at low plant density of mung bean, whereas mung bean rel-ative yield was increased with increasing plant density of mung bean. It could be recommended that intercropping three rows of mung bean with sugarcane is successful and profitable under good natural drainage.