A terminal condition controlling method and apparatus capable of operating at a low cost and effectively grasping the conditions of a plurality of terminals. In a communication system comprising a plurality of terminals and a server, the terminals are connected to the server apparatus through a communication line and transmit condition information, and the server apparatus statistically processes the attained condition information to execute the forecasting. In this time, the plurality of terminals have timings of informing the server apparatus of the condition determined for the respective terminals, and the timings for the respective terminals are distributed within a predetermined period. With this constitution, the present invention realizes to use the analysis result of the terminal condition information as data for making the next program or data for deciding whether or not the broadcasting of software should be continued in changing the version of software.