There is provided a map production method to be performed by a mobile robot which moves in a first region and includes a first sensor and a second sensor. The map production method includes acquiring first information from the first sensor, acquiring second information from the second sensor, acquiring third information from a third sensor provided in the first region, acquiring fourth information indicating a detection region of the second sensor calculated from the first information and the second information, acquiring fifth information indicating a detection region of the third sensor calculated from the third information, and updating map information of the first region for a third region, including a first object, if a the second region overlaps with the third region is judged to be present from the fourth information and the fifth information.