The invention relates to the technical field of digital TV, in particular to a method for launching digital TV advertisements based on a bilateral network. The invention provides the method for launching the digital TV advertisements based on the bilateral network. The technical proposal comprises the following key points: an advertiser provides advertisement contents and associated information to a digital TV program operator, the digital TV program operator launches the advertisement contents in an oriented manner according to the associated information thereof, when users watch the advertisement contents, a digital TV set-top boxes record and send the watching situation of users back to a data analysis server by the bilateral network, and the data analysis server counts the watching situation of the users to obtain a statistical result of the actual effect of advertisement launching after the advertisement launching time expires. The method has the advantages of good pertinence of the advertisement launching, automatic counting of the launching effect, avoiding errors in a manual intervention process and reducing the cost.