To solve the storage problem of massive information for new generation blog system, combined with the cloud storage, a new blog system architecture named BlogCloud was proposed. By using the distributed storage technology, BlogCloud avoided the bottleneck problem in centralized storage, and had high scalability. With semi-distributed Peer-to-Peer (P2P) architecture, it located storage resources quickly. To avoid the network flipping caused by the instable nodes, only the stable nodes were regarded as storage nodes. The rule of nearest storage was adopted and the data was kept in the client cache to reduce the network transmission. Users were allowed to customize the block size of file, it meant that the large files could be devided into blocks and transmitted parallel to enhance the transmission speed, while the small files did not need to be devided, which saved the cost for segmentation and combination. It also had functions of redundancy to enhance the security and reliability of the data, including storing copies of files in multi-storage nodes and remote backup. The comparison test between BlogCloud and ZSWIN was given on the virtual machine. The results show that the throughput of BlogCloud is higher than ZSWIN obviously; the performance of BlogCloud is degraded when using instable nodes as the storage nodes; BlogCloud has high reliability, it still can run stably when reducing the storage nodes and index nodes. The results verify that BlogCloud can satisfy the storage requirements for the new generation blog system.