Abstract: In southwest part of China, forest resources are abundant and there are a large number of timber structure village and town buildings. Large diameter timber columns are used in most of the timber structures in rural areas of southwest China, but the growth period of large diameter wood required is long and the cost is high. This paper presents a kind of lattice timber column, which is formed by using screws, bolts and other connecting parts to form a small diameter round timber with a certain distance. It has the advantages of easy materials and low cost, and has a good application prospect in village and town buildings, but its seismic performance is seldom analyzed. In this work, the finite element analysis software ABAQUS was used to establish a numerical simulation model. Based on the agreement between the numerical simulation and the test results, the effects of log limb spacing, log limb diameter and axial compression ratio on the seismic performance of lattice timber columns were analyzed. Analysis of the data shows that the displacement ductility coefficient increases about 4% when the distance between log limbs increases by 20 mm. When the diameter of log limb increases by 10 mm, the peak load of skeleton curve increases by about 22% and the initial stiffness of member increases by about 27%. An appropriate increase in axial compression ratio will increase the energy dissipation capacity of the component. The research results can provide reference for the practical application of lattice timber columns.