The invention relates to the technical field of dairy cow breeding, in particular to dairy cow hypocalcemia early warning and automatic supply equipment which comprises a shell, a collection
assembly is arranged in the shell, a supply cavity and a test cavity are further arranged in the shell, a
biosensor is arranged in the test cavity, and the supply cavity is used for storing an injection for supplying
calcium elements to dairy cows. The collecting
assembly comprises a plurality of blood taking needles, the blood taking needles are in sliding fit with the side wall of the shell and communicate with the testing cavity, first one-way valves are arranged at the communicating positions, the testing cavity communicates with a cleaning
assembly, the supply cavity is formed in the side wall, away from the blood taking needles, of the testing cavity, and valves are arranged at the communicating positions. A plurality of driving assemblies are arranged on the side wall, away from the blood taking needle, of the supply cavity, driving blocks are detachably connected to the ends, away from the side wall of the supply cavity, of the driving assemblies, and the driving assemblies are used for driving the blood taking needle and the valve to work through the driving blocks; the method is used for regularly detecting the
blood calcium of the dairy cow and timely supplementing the
calcium element for the dairy cow after hypocalcemia of the dairy cow occurs.