The interface performance of rammed earth and timber beam of Fujian Tulou buildings determines the interaction of the two, and the bond slip relationship of rammed earth and wooden beam is a comprehensive reflection of the interfacial performance. In order to investigate the bond-slip performance of rammed earth-timber beam joints, eight pull-out tests of rammed earth-timber beam joint specimens were conducted. The test parameters included the vertical load, the timber beam penetration length, and surface roughness. The influences of these parameters on the maximum load and the composition of the bonding force were analyzed.The interface between timber beam and rammed earth was modeled and analyzed by finite element method, and the calculation method of bonding force was put forward. The results show that the interface failure modes of rammed earth and timber beam include pull-out failure of timber beam and cracking failure of rammed earth. The bond slip curve of such interfaces can be divided into three stages, including the linear ascending stage, the slip transition stage and the residual friction stage; the finite element simulation shows that the connector spring can well represent the interface performance of rammed earth-timber beam joints; the bonding force at the interface between timber beam and rammed earth includes the cementation force, the friction force between timber beam and the contact surface of rammed earth, and the matrix suction of soil. With continuous sliding, the cementation force keeps failing and approaches zero, and only the friction force and matrix suction exist in the friction residual section.