In this paper, we introduce a Linda [3] like peerto- peer tuple space middleware build on top of distributed hash table -- DTuples. With the help of DTuples, the development of the distributed cooperation and coordination task would be simplified. The decoupled style of tuple space [2] model is useful in peer-to-peer environment. In the application level, the DTuples was used instead of the publish/subscribe model and messagepassing model. In low level, the DTuples service can be used as cooperation middleware and context-aware middleware. The tuples in the DTuples are stored in distributed hash table based peer-to-peer tuple storage. In our current work, the in(), rd(), out() and copy-collect() primitives are supported. The eval() primitive will be added to D-Tuples in the future. In this paper, we present the key design concepts of DTuples.