We set up a brand-new cloud computing architecture named Mist Computing, which distinguishes from traditional models by its increased safety, privacy and independency, which are absent in cloud computing. Different from cloud, fog and smog computing, users only need to know how to operate the DC system on the blockchain so that they can set up their own cloud at home cost-effectively. Users can employ the home package (server, node and client API)provided by AIgatha technology to connect PCs easily.