Abstract: The Larix gmelini is suggested by the authors to be used to repair the ancient wooden tower in Yingxian County of Shanxi Province in accordance with the provision of Technical Code for Maintenance and Strengthening of Ancient Timber Buildings,i.e. GB 50165-92. Since the checks during seasoning are more deeper than that of the other species and Yingxian County wooden tower is demanded to be handed down for thousand years after the repair, based on the testing results of an investigation for finding out the regularity of the seasoning checks and the contrast test of glued-laminated timber beams made of larch and fir, two measures to control seasoning checks are suggested:nail-connected beam of a pair of sawn timbers, the wide side of which is cut along diameter of the round timber; and glued-laminated timber. The checks of the timber members used to the repair of wooden tower in Yingxian County will be controlled within the limit stipulated in GB 50165-92.