A program reservation/playback judgment system for making an automatic judgment of reservation or playback of a program based on the program information in texts written in a natural language. A natural language program information processing section analyzes texts read-out thereby for extracting the program information in the texts. The extracted program information is displayed as a program information screen for confirming the program information. Upon user's operation of a reservation/playback button, the program of the program information is confirmed. Based on a comparison result of the current date and time with the date and start time of the program information by a current date/time acquisition section, a date/time judgment section makes a judgment whether the program of the program information is reserved for recording or played back, thereby instructing a program monitoring device to reserve or playback.