The invention relates to the Bluetooth communication field, in particular to a method and a system for gathering information through Bluetooth. According to the method for gathering information through the Bluetooth, through creating a data packet at a broadcast base station with a Bluetooth function and adding product advertisements and the like of the merchant to the advertisement information of the data packet, when a user holds a mobile device with the Bluetooth function to enter the effective range of the Bluetooth of the broadcast base station, the broadcast base station sends the data packet to the mobile device through the Bluetooth, when the user performs sieving and trading operations on the products of the merchant, the mobile device sends the data packet information to a background cloud server through wireless network to record. By means of the technical scheme, the method and system for gathering information through the Bluetooth are capable of realizing the information sending for the products of the merchant, the user feels convenient and quick to sieve products and trade, and the user information can be precisely recorded.