In view of the existing problem arising in the power generation market after implementing the correlated regulatory policy， a countable evaluation index system is built to systematically transfer the abstract reform request and the regulatory goals into quantifiable examination index. Then a modeling and analyzing method of rate variable based in-tree in system dynamics is used to quantitatively study the effect of correlated regulatory policy implementation. The results show that:①the key factors influencing the implementing effect of the coupled coal-electricity policy include the lowest linkage coal price rises，the linkage ratio， the coal price increase， and the timeliness of the policy implementation;②the main factors influencing the implementing effect of other regulatory policies， such as benchmark price， approval system of enterprise investment project， and replacing small units with large ones， include the different profitability， the loss of survival ability of the old unit， and the reliability of the power demand forecast;③if such improved measures as controlling the coal price rises and power demand， and adjusting the lowest coal price rises and the linkage ratio are taken， it may take effect in relieving the coal and power price contradiction， improving the unit profitability， inspiring the investment， and promoting the balance between power supply and demand.