With the increase of the number and variety of remote sensors and the accuracy requirements for the calibration of remote sensors, the task of calibration is aggravated. High-frequency calibration can reduce the error of calibration and improve the level of quantification. But on-orbit calibration mode based on a small number of calibration sites has been unable to meet the timeliness and functional requirements of business applications. For the high-frequency, high-efficiency, multi-time and multi-site calibration requirements, an intelligentized calibration task planning system was developed. Relying on the domestic core site and foreign digital site, a global calibration sited information database was established to solve the matching problem of the site characteristics, satellite and load characteristics, space and time. Through the digitization of site and satellite attributes, the complicated factors that need to be considered in the calibration planning are transformed into the rules of matching calculation and the computer-readable logic. So it is possible to achieve multi-site calibration task planning on a global scale so as to improve the efficiency of calibration and achieve the goal of high-frequency calibration.