The invention discloses a special chassis of a hot in-place recycling remixer; the remixer comprises a main frame and two pairs of axles which are respectively assembled at the front and back of the main frame, wherein the two pair of axles at the front are back and forth arranged on a front balanced beam suspension system respectively; the front balanced beam suspension system is arranged on a front auxiliary frame which is rigidly connected under the main frame; the pair of axles at the front realize the synchronous steering by a first synchronous steering mechanism; the pair of axles at the back are back and forth arranged on a back balanced beam suspension system respectively; the back balanced beam suspension system is arranged on a back auxiliary frame which is rigidly connected under the main frame; the two pair of axles at the back realize the synchronous steering by a second synchronous steering mechanism; and the axles are all provided with steering locked mechanism used for the conversion of the steering state of the front axles or back axles of vehicles. The special chassis based on the technical scheme of the invention is flexible to be steered, safe and reliable to be used and has complex structure.