This paper presents a design and implementation of CRs(CHILL Run-time support System) to adapt the concurrent processing facilities of CHILL(CCITT High Level Language) which had recommended by ITU-T(International Telecommunication Union Telecommunication Standardization Sector). Because the CHILL provides more various concurrent processing facilities that other concurrent programming language, a design and implementation on CRS can give us real effects to gain the major functionalities and the techniques of the concurrent processing. In this paper, we design the interface rules of concurrent functions to conform with the CHILL compiler. We use the concurrent processing primitives as the library style to be invoked by procedure calls, and implement the start-up routine of the CHILL program, the context switching routine, and the CHILL process control parts to control be execution of the CHILL processes concurrently.