Effects of pre-precipitates on recrystallization structure and recrystallization temperature of AA3003 twin roll cast aluminum strip treated by different homogenization were investigated by optical microscope,hardness tester,scanning electron microscope and the Kelvin bridges.The results show that recrystallization structure in the cold rolled strips is closely related to the precipitated secondary phase during high temperature homogenization.The recrystallization temperature of the strips treated by homogenization at 580℃ is decreased approximately 100℃.Furthermore,fine equiaxed structure with very small size gradient can be observed in the strips after annealed at 520℃.