To make a market survey questionnaire according to the needs of enterprises, we must first determine the main survey contents, including the main survey population, main projects and survey purposes. All these need to be discussed with their own competent leaders in time to determine the final content, and then carry out the next work. Select some sample customer groups, that is, select some representative customers from many customer groups, and conduct market research among them, and the data obtained should be almost the same as the overall conclusion. To be on the safe side, you can investigate more.