Lidar is a key technology for autonomous driving. The main tasks it undertakes are to test the distance and identify the environment to create a three dimensional map. The accuracy of environmental recognition is critical to the safety of driving, but the price ratio of traditional lidar technology is far from meeting the application of the highest level L5 autonomous driving, which is proposed for the performance and price of lidar technology. A new challenge has emerged, and at the same time, the scent capital market has already locked its eyes on it. Lidar field may Usher in a vigorous development of diversity.