The three events of "withdrawing Ningyuan(宁远)to guard the Shanhai Pass", "relocating to the south", and "the Crown Prince strengthening the southern military defense "that took place in the year of Jia Shen(甲申)are crucial to the survival of the Ming court. In the past, these three events had been summarized under the vague narrative of the conflict between the ruler and the minister and the discourse of clique, which was difficult to reflect the actual situation at that time. Under the pressure from both the east and the west battlefront, the matter of "withdrawing Ningyuan to guard the Shanhai Pass" was left unresolved, while the discussion of the "southern relocation" shifted from non-public to public, which gave rise to the proposal of "the Crown Prince strengthening the southern military defense" that was considered by the people of the time to be more appropriate. The decision-making process of the Ming court on the above three events was tortuous and repeated, not due to the unilateral misjudging of emperor Chongzhen(崇祯)or courtiers, it was the imbalance of the decision-making mechanism and the extreme criticism of scholars that led to the order gradually break down and a stalemate in decision-making. Based on this, it is helpful to analyze the complicated evolution of the power of Kings and ministers in the late Ming Dynasty by examining the relationship between imperial power and scholar-officials during Jia Shen period.