Abstract: With the integrated circuit going into SoC era, the reusability of IP is inevitable in the process of SoC system design and integration.The Discrepancies between various IPS and bus interface, however, have became the main obstacle for IP reuse.By studying the bus interface characteristics of various IPs, the design of reusable interface for AHB bus slave is designed and implemented in this paper, which can meet the interface requirements of a specific peripheral.The interface module has been successfully applied in the integration of trigonometric functions, UART, CAN etc.