Two field trials were conducted in 2010 and 2011 to determine the effect of regimes irrigation on yield and its components for the maize-soybean intercropping patterns. The experimental was based on split plot in a randomized complete block design with three replications. The main plots consisted of three different irrigation regimes,(I₁ )irrigation during all groth stage as control treatment,(I₂) withholding irrigation at the flowering stage and (I₃) withholding irrigation at the pod stage. The sub-plots included three intercropping patterns( T₁)=growing soybean on both sides of beds (140 cm)  and planting one row of maize on the back of the bed (50cm between hills,1 plant) ,(T₂)=growing soybean on both sides of beds and planting one row of maize on the back of the bed and leave another bed (50cm between hills, 2 plants) and( T₃)= growing soybean on both sides of beds and planting one row of maize on back of the bed and leave another bed (25cm between hills, 2plants)  Data showed that: 1- Whole irrigation gave the highest yield and yield components of maize/soybean intercropping. Whereas, withholding irrigation at the early  flowering stage gave the lower yield and yield components. 2- Intercropping maize with soybean surpassed yield and yield components when used all beds, 50 cm between hills  and left one plant /hill. 3- Interactions effect of irrigation x intercropping on maize indicated that, the treatments of I₁ X T₁ gave the highest values for all traits studied, whereas, the lowest value was recorded with I₂ x T_3. 4- Results showed that, Land Equivalent Ratio was the highest with the treatment of I₁ x T₁ (1.24, 1.16 and 1.20) in both seasons and the combined analysis, respectively, also, the same interaction recorded the highest net return (3303.07, 2750.35 and 3026.71) in both seasons and the combined analysis,respectively.