“…In recent years, related topics and problems have attracted more and more researchers' attentions, see, for examples, Veretennikov [32], Huang-Malhamé-Caines [17], , Buckdahn-Djehiche-Li-Peng [8], Buckdahn-Li-Peng [9], Borkar-Kumar [6], Crisan-Xiong [12], Kotelenez-Kurtz [20], Kloeden-Lorenz [19], and so on. More interestingly, control problems of McKean-Vlasov equation or MF-FSDEs were investigated by Ahmed-Ding [2], Ahmed [3], Buckdahn-Djehiche-Li [7], Park-Balasubramaniam-Kang [28], Andersson-Djehiche [4], Meyer-Brandis-Oksendal-Zhou [25], and so on. This paper can be regarded as an addition to the study of optimal control for MF-FSDEs.…”