Disclosed is a ring data buffering implementation method based on a synchronization mechanism for an embedded system, the method comprising: when data is written under a first working state, switching to a second working state; when data continues to be written under the second working state, if a buffer is filled with newly added data, entering a fourth working state; under the second working state, reading the data of the buffer, and if the size of the read data is smaller than the size of buffered data in the buffer, entering a third working state, otherwise, entering the fourth working state; and under the third working state, when data is read and no data in the buffer can be read, entering the first working state, and when the data is written into the buffer, if the buffer is filled with data through writing, entering the fourth working state. The method uses a semaphore synchronization mechanism built into an embedded operating system, an original ring buffer is stronger, a configurable and transplantable ring buffer is used, the method is applicable to different software systems and different hardware systems, and the requirements of practical application can be better met.