Abstract: An anti-impact safety apparatus for a robot includes a buffer mechanism disposed between a swivel arm and a working arm of the robot. The buffer mechanism incorporates a converting mechanism which converts an electrical signal into a gas or liquid pressure. When an impact load, such as an axial load, eccentric load, or moment load, is applied to the working arm while in operation, the impact load is absorbed by the buffer mechanism and is also detected by a sensor switch, and the operation of the robot is instantaneously stopped. Thus, it is possible to protect the working arm and a function unit incorporated in the robot main body from the impact load. In addition, it is possible for the working arm to be readily restored to its normal position when the eccentricity thereof produced as a result of the impact is corrected.