The research to find out crucial parameters, the time to start spraying solution and the time to stop spraying, the EC nutrient solution used in cultivation of F1 tomato plants using aeroponic technique. The results showed that the optimum conditions for growing commercial tomato using aeroponic technique are: 1/ For the Winter crop: period of spraying solution during the day 15s/13min, at night 15s/20min. The EC of solution 2700-3000 ps/cm. In addition for the Spring-Summer crop: period of spraying day 20s/10min, at night 20s/15min, EC of the solution 2500-2700 ps/cm. Tomato growth in these optimum conditions showed very good development and high yield.