本文利用指数型二分性理论，给出具有强迫项的Ｌｉｅｎａｒｄ类型方程周期解及概周期解存在的充分条件，这些条件是由ＦｉｎｋＡ．Ｍ．，林发兴在文［１，２］对Ｌｉｅｎａｒｄ方程关于同样问题所获结果的自然扩展与推广

Using the exponential dichotomy theory, we give the sufficient conditions ofthe existence on periodic solutions and almost periodic solutions for forced Lie'nard-type equation These conditions are the naturalextension and generalization of the results already obtained by Fink A.M., Lin Faxingin 11, 2] associated with the same problems for Lie'nard equations.