The Strength(σb, σ0.2), ductility(δ, ψ)and impact toughness (ak)of TC4 alloy annealed in 940℃, 960℃, 980℃ and cooled in different cooling rate after 980℃annealed were tested by means of Tensile Test in room temperature and Impact Test in room temperature. Combined with metallography and fractography, the influence of annealing temperature and cooling rate were studied. The results show that the strength, ductility and impact toughness decrease with the increasing of annealing temperature, the strength increases, but the ductility and impact toughness decrease with the increasing of cooling rate.