%0 Journal Article %T The Existence of Periodic Solutions on One Element -Degree Polynomial Differential Equation %A Hua %A Ni %A Li-Xin %A Tian %J - %D 2020 %R https://doi.org/10.1155/2020/7034591 %X This paper deals with a class of one element -degree polynomial differential equations. By the fixed point theory, we obtain periodic solutions of the equation. This paper generalizes some related conclusions of some papers %U https://www.hindawi.com/journals/amp/2020/7034591/