To ensure the safety and reliability of autonomous vehicles, safety verification plays an important role before going on the road. Countries all over the world are building autonomous vehicle test sites actively and setting standards to accelerate the autonomous technology. Leading manufacturers are also expanding their testing and verification in these physical test sites. The importance of the simulation system is that it undergoes repeated training and adjustments in the virtual field before the actual roads, so that the autonomous vehicle can achieve a certain degree of reliability. At the same time, it reduces the manpower, money and time costs of the physical field test, and can be effectively reduce the risk of real road testing. This article will introduce the development trends of the global autonomous vehicle simulation solutions.