The invention discloses a thermal recovery material mixing system with rotary iron-removing device. The device includes a material mixer, a stirring roller iron-remover and a reactor. The material mixer is fixed on a fixing frame; the stirring roller iron-remover includes a feeding groove, a dynamic transmission mechanism, an internal roller and an outer sleeve cylinder; the internal roller and the outer sleeve cylinder are obliquely arranged; the feeding groove is movably arranged on the internal roller; a stirring shaft is movably arranged in the internal roller; one end of the dynamic transmission mechanism is movably connected with the stirring shaft; the other end is fixedly arranged on a fixed plate; an installation seat is fixedly connected below the fixed plate; an iron-removing groove is movably arranged in the installation seat; the outer sleeve cylinder sleeves outside the internal roller; a permanent magnet iron block is movably arranged on an internal wall of a lower sideof the outer sleeve cylinder; a stirring blade is movably arranged on the stirring shaft; the reactor is movably arranged on a platform vehicle; the material mixing system can not only stir to avoid caking, but also ensure a good iron-removing effect, preventing iron impurities from secondarily polluting materials and improving the reliability of the whole mechanism at the same time.