A method of time-delayed opto-electronic feedback control is applied to chaotic control in semiconductor laser. It can determine the parameter range of ［0.51, 0.60］ for the laser being chaos state by plotting the system’s maximal Lyapunov exponent varying with the current-modulated intensity by numerical calculation of laser’s dynamic equations. And it is realized for chaotic control of the laser by the scheme of time-delayed opto-electronic feedback. Numerical stimulation shows that the scheme can achieve two kinds of different chaotic control. It can change the system from chaos into intrinsic periodic state. The controlling signal can approach zero after control achieving, and the laser’s periodic outputs donot need the existence of the controlling signal. It can as well change the system from chaos into new periodic state. The controlling signal cannot approach zero after control achieving, and the laser’s periodic outputs need the existence of the controlling signal.