People hope to better monitor the management of the board through bringing outside directors to the board. However, outside directors need soft information to effectively play the role of monitoring and decision advice. We study the data from China and find local independent directors have significant relations with the monitoring and decision efficiency. Comparing to the study by the foreign scholars we think our results are consistent with the conclusions from foreign scholars. We all agree that the number of the local independent directors has negative relations with M&A price and the number of cases. So the local independent directors can improve the efficiency of M&A decision, especially for SOEs. The more sources of information guarantee the efficiency of the monitoring. Our study reflects state-owned enterprises have more serious information asymmetry, and the independent directors with more information has become an important guarantee of effective governance.