A manual shift lever system may be provided that includes: a shift lever which includes a rod and a stopper formed on the rod; a shift lock unit which limits a movement of the rod; and a control unit which, when a speed of a vehicle is greater than a critical speed of a predetermined gear limits the movement of the rod in a shift direction of the predetermined gear. The shift lock unit includes: at least one shift lock cam part including a main cam, a sub-cam, a shaft which functions as a rotating shaft of the main cam and the sub-cam, and a spring which connects the main cam and the sub-cam; a permanent magnet which is connected to the shift lock cam part; and an electromagnet arranged to have a polarity arrangement opposite to that of the permanent magnet.