Both OpenHarmony and HarmonyOS system have played an important role in Huawei's ecosystem. OpenHarmony provides the underlying architecture and communication capabilities, and HarmonyOS system has built a complete intelligent terminal operating system on this basis.

OpenHarmony is an open source project hatched and operated by the Open Atomic Open Source Foundation. It is the framework and platform of intelligent terminal operating system based on open source method. Is it scene-oriented, distributed and "global"? New (new generation)? Open (open source)? Put (open) the operating system. OpenHarmony is the foundation of HarmonyOS system, which provides the underlying communication capability and architecture support for HarmonyOS system. HarmonyOS system is Huawei's intelligent terminal operating system. Based on OpenHarmony, it has been further developed and optimized to form a system with individual characteristics. HarmonyOS system includes user interface and application ecology, in which the application ecology is bound with Android. HarmonyOS OS is the scientific name of the HarmonyOS system installed on Huawei mobile phones, and its essence is a mobile phone system based on the OpenHarmony plug-in of Android AOSP.