Abstract:The mixed type saw chain was developed by Northeast loggerfellers. This type saw chain consists of the cutter and planer teeth from straight cutter chain and the curved cutter teeth from chipper chain. This type saw chain has been used widely for many years in the Northeast China. An experiment and study on this type saw chain was conducted with the T-2 saw chain experiment desk. The result shows that the cross-cutting efficiency of the mixed type chain on pine and maple tree species is higher than chipper chain. The angle cutting efficiency is a little lower than chipper chain, but the kerf declination is greater than chipper chain and less than straight cutter chain. The mixed chain has shown great advantage in felling over straight cutter chain. As the mixed type chain has various teeth which perform different functions and the number of teeth is greater, so the force and stress on every tooth is less than that on the chipper chain. The domestic chipper chain often subject to breakage due to low quality material and technology. For the time being, the mixed type saw chain should be widely used in China for felling.