The study was conducted in eastern and western zones of Haryana in 2017-18. From eastern zone Kurukshetra and Panipat and from western zone Hisar district were selected on basis of acreage under summer mungbean. The outcomes of production function analysis reveal that there is scope for reorganization of resources used in cultivation of summer mungbean to optimize their use to enhance returns in the study area. In all the districts, the usage of resources which are showing negative production elasticity should be decreased to achieve the resource optimality and the use of resources viewing more than unity production elasticity should be encouraged to enhance the profitability condition. The analysis of constraints in cultivation of summer mungbean as opined by the sampled farmers recite that non-availability of suitable machine for harvesting, non-procurement of produce by Govt. agencies, harvest price less than MSP were recorded as the major constraints in the study area. Keeping in view the findings of the study, it is suggested that there is need to re-orient the usage of resources for attaining higher returns from summer mungbean cultivation, multiplication of short duration varieties seed, need to develop suitable and low cost harvesting machinery and procurement arrangement of produce at MSP.