By summarizing and comparing the modeling studies and geologic records, this paper focuses on the regional responses and the current debates for YD event, and then presents some areas and directions to be further studied. Increasing high-resolution records identified a spatio-temporal heterogeneity for the Younger Dryas (YD) event. Knowledge of the structure and transitional pattern for these spatial expressions helps to determine the phase relationship between them, and further understand how reorganization of regional environments response to rapid climate changes at the low- and high-latitudes.