PURPOSE: To provide a method and a device for automatically forming a correcting table for an assembling robot by which an action correcting table to be used in automatically assembling a work by making use of a detected value of an inner force sensor attached to a wrist of the assembling robot can be automatically formed.

CONSTITUTION: A robot 1 is manually moved to a work interference point, an interference avoiding point, and then an assembling completion point by operating a teaching board 3 by a human being, and a value of an axis parameter of the robot 1 in respective points and the detected value of an inner force sensor 4 are automatically stored into a correction patter storing unit 11 by the specified form. At this time, a pattern number N is provided for each operation of a series of operations in order to discriminate the other patterns.