A device and a method for robotic process automation of multiple electronic computing devices are disclosed. The device creates and stores a script that records at least an event relating to a first device and at least one action corresponding to the event. The device continuously receives a current screenshot image of a first device, and continuously analyzes the current screenshot image of the first device according to the script so as to determine whether the event has occurred. When determining that the event has occurred, the device generates at least one control signal corresponding to the at least one action according to the script, and transmits the at least one control signal to a second device, so as to perform the at least one action for the second device.