The invention discloses a turnout support system applicable to a straddle type monorail and belongs to related technical fields of straddle monorails. A continuous rigid frame in a longitudinal direction and a plurality of support units which are arranged below the continuous rigid frame at intervals in the longitudinal direction are arranged, the continuous rigid frame is fixedly connected with apier cover beam at the top of the support units, then a rigid system with synergetic stress is formed, and a turnout system can be stably supported effectively on premise that the setup height of a support system is reduced. The turnout support system applicable to the straddle type monorail, which is disclosed by the invention, is simple in structure, simple and convenient to set, small in construction difficulty and high in construction efficiency, a straddle type monorail turnout system can be effectively and stably supported, the height of the cover beam and the overall height of the turnover system are reduced, the construction cost is reduced, great flexibility is provided for design of stations and rails of the straddle type monorail, good application prospects and popularization and application values can be made, and popularization and application of the straddle type monorail can be effectively promoted.