The invention provides an automatic detection control device of a medical water purifier, and relates to the technical field of medical water purifying. The automatic detection control device of the medical water purifier comprises a device body, wherein the left side of the top part of the device body is fixedly connected with a PLC (programmable logic controller); the right side of the top partof the device body is fixedly connected with a display screen; the top part of the right side of the device body is fixedly connected with an alarming device; the top part of the inner wall of the device body is fixedly connected with a temperature adjusting valve; a conductivity meter penetrates through the bottom part of the device body; the left side and right side of the device body are fixedly connected with a first guide pipe and a second guide pipe. The automatic detection control device of the medical water purifier has the advantage that by arranging a fixing block, a transverse plate, a sealing ring, a purified water tank, a clamp buckle, a clamp ring and a fixing column, when the stainless steel filter element and RO (reverse osmosis) filter element are detached and cleaned, thetransverse plate is pressed, the sealing ring is extruded by the transverse plate, and the bottom part of the inner wall of the sealing ring is not in contact with the bottom part of the side surfaceof the fixing column.