Big Data is an IT industry term that simply means a collection of data that can't be managed and processed with conventional software. It is specifically composed of four parts: cloud computing, distributed processing technology, storage and perception technology, and throughout the entire process from data collection, processing, storage formation. Big data to realize all-round, all-weather tracking of human trajectory, must be combined with the Internet and information collection equipment to give full play to its role. Big data to realize the tracking of human trajectory from the Internet-based information data collection. The main function of big data is to store, calculate and analyze information data, but it must start from the collection of information data, otherwise it becomes "cooking without rice". And also rely on advanced and perfect network systems and information data collection means and equipment to be completed.