The invention relates to the technical field of electronic signatures, in particular to a hyper-fusion cloud all-in-one machine. The all-in-one machine comprises a casing, and a server, a power manager, a cloud server, a switch and an external memory, which are regularly arranged in the casing; and an electronic signature system platform is loaded on the server, and the system is composed of an electronic signature management system deployed on the server and an electronic signature client deployed in a user side computer. The machine designed by the invention is highly integrated, simple and compact in structure, low in use cost, convenient to maintain and manage and capable of effectively supporting the operation requirement of the system, and a large amount of tedious electronic computing equipment can be omitted; and the electronic signature system supported by the system is suitable for domestic software and hardware and cryptographic algorithms, can be separated from complex hardware, is simple and easy to use, is safe and reliable, can bind a signature and a file together in the use process, ensures that the file is anti-counterfeiting, anti-tampering and anti-repudiation, and can meet the requirements of high-efficiency, convenient, safe and legal high-efficiency office work.