To provide a parallel distributed control system by a plurality of processors, capable of creating easily a program with a simple configuration controlling a variety of functions and installing easily the program into each inside of processors.

The distributed control system, connecting serial ports 2-K and 2-C which connects a plurality of function-distributed control/computing processors 1-K and a single communication processor 1-C to a single direction communication path 3 in a single direction and in a loop form to exchange data through fixed length packets, wherein the processor 1-K, is composed of the same basic configuration with a memory and a data flow processor; the processor 1-C is connected to a host computer 10, to receive and transfer a variety of packets including programs to bring out each function and store the packets into the processor 1-K; and accordingly, the processor 1-K processes received data to bring out the functions based on the stored programs when receiving predetermined data.