Abstract: An indoor voice navigation system and indoor voice navigation method are provided. An initial position and a target position is inputted to the indoor voice navigation system to generate an actual navigation path from the initial position to the target position, where the actual navigation path comprises at least one positioning location and each positioning location contains a two-dimensional barcode to describe its location information. The indoor voice navigation system is able to find a next positioning location in the actual navigation path and set the next positioning location as a new initial position repeatedly. And, in the way of finding the next positioning location, the indoor voice navigation system may suggest a direction and a distance by voice. With above technical features, the system and method may achieve the goal of navigating in the interior environment by lower cost.