In　order　to　diagnose　the　high-speed　compressible　turbulent　flow　field,　a　two-dimensional　(2-D)　multi-parameters　measurement　method　based　on　mull-beam　interferometric　Rayleigh　scattering　(IRS)　technique　was　proposed.　Under　the　beam　splitting　of　etalon,　the　Rayleigh　scattering　signals　generated　by　the　interaction　between　mull-beam　laser　probes　and　the　flow　field　gas　molecules　formed　2-D　interference　measurement　lattice.　Each　measurement　point　contained　the　thermodynamic　and　velocity　information　of　the　flow　field　corresponding　to　a　specific　spatial　location.　By　calibrating　the　effective　finesse　and　transmittance　of　the　etalon　at　different　incident　angles,　the　measurement　accuracy　of　temperature　and　density　of　high-order　interferometric　points　was　improved.　A　2-D　IRS　measurement　system　was　established　by　combining　mull-beam　laser　probes,　amplification　imaging　system　and　solid　quartz　etalon.　A　high　speed　jet　was　used　to　verify　the　technology.　The　distributions　of　temperature,　density　and　velocity　at　different　positions　along　the　radial　direction　and　axial　direction　of　the　nozzle　were　obtained.　The　results　shown　that　the　technique　could　be　used　to　simultaneously　measure　the　2-D　mull-parameter　information　of　the　flow　field.