The invention relates to a multi-stage inflated distribution type natural gas liquefying system considering a total energy system. The natural gas liquefying system comprises a centrifugal separator which is communicated with a main air flow of high-pressure natural gas, wherein the centrifugal separator is sequentially communicated with a precooler, a first-order gravity separator, a first-orderexpander, a second-order gravity separator, a dry devulcanizer and a low-temperature cooler; the outlet of the low-temperature cooler is divided into two paths, wherein one path is communicated with a vortex tube, while the other path is communicated with a second-order expander; after being mixed with steam in an LNG storage tank, the gas of a cold end outlet of the vortex tube enters a deep freezer and then is liquefied and stored in the LNG storage tank; the second-order expander is sequentially communicated with the deep freezer, the low-temperature cooler and the precooler; working substances which are led out from the precooler merge with the working substances of a hot end outlet of the vortex tube and enter a compressor; and the natural gas which is led out from the compressor is sent to users or the total energy system. The natural gas liquefying system provides reproduced gas for self-produced natural gas hot gas, and the reproduced gas can be purified. Power needed by the liquification of the natural gas can be self-supplied, and the energy of the total energy system can be comprehensively utilized.