Nielsen P 1M is an audience survey method for CSM media research. CSM survey network collects sample data of urban residents and infers the rating of the total number of families in a specific city. Nielsen P 1M data is one of the important indicators to evaluate the ratings of TV programs. Knowing the turn-on rate, we can know whether the audience in a specific city has the opportunity to watch TV programs, which has important reference value for the media and advertising industry.