Abstract: In order to improve the digital circuits teaching quality,and improve the students‘ engineering quality and ability to solve practical problems, the teaching method with practical projects is put forward.The people voting machine, the counter, the intelligence responder and the 555 timer application program are designed by the Multisim12.0 software,cultivate students interest and engineering innovation consciousness.The practical results show that under specific engineering background, the method can improve the students’ abilities of understanding basic knowledge, widen their sight, grasp the advanced design methods and ideas, and lay a good foundation for the future conduct of scientific research and engineering practice.