A field studies on chilli (Capsicum annuum L.) using drip irrigation system was undertaken with different levels of drip irrigation and fertigation. The experiments was laid out in split plot design with 15 treatment combinations replicated three times in which included 3 levels of irrigation viz., 80%, 60% and 40% PE through drip irrigation and five levels of fertigation viz., 100% RDF, 75% RDF, 50% RDF, 75% RDF + 2 foliar spray of 1% urea phosphate, and 50% RDF + 2 foliar spray of 1% urea phosphate through fertigation. The studies revealed that drip irrigation at 80% PE produced the highest chilli yield (16.14 t ha-1), NPK content in fruit & plant, nutrient use efficiency, net return and B:C ratio as compared to drip irrigation at 40 % PE. The highest yield (15.94 t ha-1) and net return and B:C ratio were found with 75% RDF through fertigation + 2 foliar spray of 1% urea phosphate as compared to 50 per cent RDF through fertigation. The maximum NPK content in fruit & plant were obtained with 100 % RDF through fertigation as other fertigation levels, while the highest nutrient use efficiency was recorded with 50 % RDF through fertigation + 2 foliar spray of 1% urea phosphate than other treatments. This studies drip fertigation could be particularly useful for small and large scale vegetable production during Rajasthan region and also saving water and nutrients.