The current study carried out to assessment the effect of addition of low levels 0.3 and 0.6 g/kg diet of Spirulina platensis (SP) on the productive performance and economic efficiency parameters of growing Red Balady rabbits for 8 weeks. A total of 36 growing rabbits (6-week old) were randomly assigned into three dietary experimental treatments (12 rabbits of each), that was conducted from 6 to 14 weeks of age. The obtained results revealed that addition of SP to the diet of growing rabbits at level 0.6 g/kg diet led to significantly increased of growth performance parameters and improved feed conversion ratio, as well as led to insignificantly enhanced of carcass traits, and hematological and economic efficiency parameters compared to those fed the low level (0.3 g/kg diet) or those fed free SP diet. Thus, it could be concluded that the useful addition of SP for improving the productive and economic performance of growing Red Balady rabbits, especially at the tested level 0.6 g SP/kg diet.