Taking the multiple streams theory as the analysis framework， this paper makes an in-depth analysis of the formulation process of the Plan to Strengthen Basic Education Teacher Force in the New Era. It reaches an conclusion that the problems such as teachers'' ideological quality， ability quality， resource allocation， status and treatment indicated by multiple sets of objective data indicators rapidly become an problematic waves accompanied by hot events of some teachers'' moral anomie and their corresponding policy responses. The responses of governmental initiatives， relevant policy measures， and replies from experts and scholars'' communities converge into a policy stream； strong national mood and the party''s governing philosophy and its concept of "providing a good education that satisfies the people" constitute political flows. The three streams are constantly mixing， interacting and piling up with each other. At the moment of "coupling"， they open the policy window and promote the formulation of the policy agenda of the Plan to Strengthen Basic Education Teacher Force in the New Era.