Abstract: Augmented Reality (AR) technology has great potential to be applied in different fields like education, medical surgeries, manufacturing, etc. Assembly process is an important process in manufacturing field and it is happening in our daily life too such as put furniture’s pieces together. Therefore, an assembly training is essential for a person who has no or simple knowledge about the product assembly process. Conventionally, the assembly task training is conducted through paper-based manual to guide and train the participant to understand the assembly steps. This traditional method is costly and time consuming. Stereoscopic vision has shown to be more beneficial over the monocular vision which it can provide depth information to the users. AR could combine with the stereoscopic vision to present the virtual object in a better way for the users to judge the distance of the virtual object in assembly system. Thus, it will be more closely to the real assembly situation. This study proposed a new system architecture which consists of the necessary components that are needed for stereoscopic-based mobile augmented reality system. It can be a reference for others who want to create a mobile type augmented reality with stereoscopic vision applications for assembly processes. The components of the system architecture include the hardware, different type of target and the AR environment part. Various interaction modes have shown and explained in the AR environment part to allow users to interact with the system. At the end of the study, a mobile augmented reality assembly system for PlayStation 3 console was successfully developed according to the proposed stereoscopic-based mobile AR assembly system architecture.