The electron irradiation is the main part of space radiation and also the main means that we simulate space radiative environment .To study the feasibility of semiconductor lasers used in radiative environment of space, this paper studies the total dose effects through electron accelerator simulating the radiative environment of space. The result shows that as the radiation dose increases, the threshold current decreases as the dose increases and the slop efficiency increases gradually before 106 rad . During the annealing process, threshold current fluctuates in the first two weeks but the overall trend is increases and after that it tends to be stable. To the semiconductor lasers which are radiated in the relatively low dose, the radiative effects on the threshold current and slop efficiency can be eliminated through the method of current compensation.