To investigate complex algorithms of Lyapunov values and types of origin for plane polynomial differential systems,Lyapunov values for four differential systems were computed with complex algorithms of Lyapunov values. Sufficient conditions with origin being a center and the highest orders of fine focus were obtained for the first two systems,and the stabilities of the highest-order fine focus were judged under different parameter data. Complex computations of Lyapunov values for the last two systems with o...