Provided are a tool for supporting open computing language (OpenCL) application software development for an embedded system and a supporting method thereof. The tool in conjunction with a target system includes a project management unit configured to separate and store OpenCL application software constituted of a host program and a kernel program into a host source code corresponding to the host program and a kernel source code corresponding to the kernel program, and manage a tool-chain corresponding to an OpenCL platform of the target system, and a builder configured to determine a compile type of the kernel source code and determine whether the kernel source code is built in response to the compile type. Accordingly, it is possible to rapidly provide a tool for supporting OpenCL application software development that can develop OpenCL application software for an embedded system.