The true spiders play an important rule for reducing the infestation ratio of field crop pests. The sucking pests are favourable preys for it and also the first and the second instars of cotton leafworm. This study were carried out during the two successive two years 1998-1999 for surveying the true spider species associated with some field crops in some Governorates in Egypt. A survey study conducted to determine the presence of 10 families, 15 genera and 16 spider species associated with four different field crops. The relationship between temperature degree and the number of true spiders in Fayoum Governorate was studied.