To provide a timber processing system and a code seal which can eliminate the necessity of an input work during introduction of a timber, and which can facilitate the sorting of timbers.

A QR code stuck to a pillar member is read, and processing data corresponding to the QR code is delivered to a processing device. Accordingly, the processing can be automatically carried out only by applying a code seal 68 onto the pillar member. It is noted that data which can be visually checked are added, and accordingly, an adaptable timber may be easily sorted when the code seal 68 is applied to the timber.