The invention discloses a mechanical arm remote simulation control system. A remote simulation controller and a data storage device are arranged in a controller device; a received action signal is decomposed and processed through the controller device, so that a series of fine movement data set is formed and stored in the data storage device; when the controller device sends one action command toa mechanical arm, the series of fine movement data set can be extracted from the data storage device and processed at the same time, so that a series of fine action command signals is formed; after the mechanical arm implements a series of fine action commands, a series of fine actions is jointly combined into an original activity action, so that action simulation is realized; and the simulated action is formed by combining the multiple fine actions, so that the activity flexibility and the use accuracy of the simulated action are greatly improved.