Under the background of big data, there still exists certain controversy over the necessity and significance of sampling surveys. This article defines two types of big data scenarios: one is the situation of the existing massive amount of data; the other is the situation of the existing massive sampling frame directory. In the case of massive sampling frame directories, sampling surveys are both necessary and important. Based on a massive sampling frame directory of a platform company, this article uses catalog sampling to conduct a sample survey study over the issues that the platform company is concerned about, and considers sample size allocation, target volume estimation and evaluation in the case of sample rotation, to try to provide a useful reference for future similar sampling survey applications.