The invention discloses a medical nursing adjustable neck limiting assembly, and relates to the technical field of medical instruments. The medical nursing adjustable neck limiting assembly comprisesa front neck support, a rear neck support, a clamping sleeve and a fixing belt, wherein the front neck support comprises a front upper supporting plate, a front lower supporting plate and a semicircular protection plate; the front upper supporting plate and the front lower supporting plate are movably connected through a telescopic rod; a spiral fastening sleeve is arranged on the outer side faceof the telescopic rod; the rear neck support comprises a rear upper supporting plate, a rear lower supporting plate, a massage block and a spring; and the rear upper supporting plate and the rear lower supporting plate are connected through a hinge. According to the medical nursing adjustable neck limiting assembly, by arranging the telescopic rod, the fixing belt, the spring, the massage block, the clamping sleeve, the semicircular protection plate, a guardrail and the like, the problems that an existing neck fixing device is poor in adaptability and breathability, dining is inconvenient, andthe neck cannot be massaged are solved, the adaptability, breathability and practicability of the neck fixing device are improved, and the massage function is added.