The invention relates to the technical field of pension robots, in particular to a task self-adaption system of a pension robot. The system comprises a robot body; the robot body is provided with a memo module for reminding and arranging daily events; and the memo module comprises a pension input unit for inputting memo items by old people, a sound reminding unit for reminding the memo things to the old people, a timing unit for timing beforehand to remind the old people, a display screen for displaying the memo items of the old people, and a microcontroller for controlling and processing data. The system reminds things about to be done to the old people, and can remind the old people to prepare beforehand, so that the travel of the old people is systematically, and the life of the old people is clear; and the pension robot can be conveniently used by the old people, so that the curiosity of the old people to new-tech products is satisfied, and the old people feel that they can keep pace with the times.