Abstract: Based on the 6LowPAN architecture, a design scheme on next-generation all-IP wireless sensor network is proposed. The scheme creates an IPv6 address structure, an automatic IPv6-address configuration algorithm and routing algorithm. In addition, the scheme also includes a fragmentation algorithm on the adaption layer and a reduced IPv6 protocol stack in wireless sensor networks. This scheme is implemented in both a physical experimental enviroment and a simulation environment respectively, and its performance is analyzed. The experimental data prove the validity and correctness of the scheme.