Spiders found in open and green houses fields of two vegetables (cucumber and pepper) were studied during the cultivation season 2007 and 2008 at Giza region. The obtained data proved that the number of collected spiders associated with cucumber in green house were nine families. Five families of insect pests were recorded and only one mite family, Tetranychidae. Considering the population of the collected spiders and their associated insect and mite pests, the highest total number of these spiders on cucumber plants was recorded during January and then decreased reaching to the lowest population during June. The highest population of insect pests was determined during April while the lowest level of the population was recorded during February. June was the month showed the highest abundance of the spider mites while the lowest population was noticed during January and February. The same spider families were recorded in green houses and in the open field of cucumber and the number of collected individuals were clearly lower than those of green house. April had the highest number of spiders which rapidly decreased reaching to the lowest abundance during May.