The invention relates to a drinking water machine, comprising a casing, a pitcher and a water way system, wherein, the water way system comprises a diversion basin, a water inlet pipe, an exhaust tube, a water-outlet valve and a water outlet pipe. The drinking water machine is characterized in that: the interfaces of a water inlet pipe and an exhaust tube are arranged on the diversion basin, one end of the water inlet pipe is connected with the interface of the water inlet pipe of the diversion basin, the other end is used for injecting water to the tank body of the pitcher, one end of the exhaust tube is connected with the interface of the exhaust tube on the diversion basin, while the other end is communicated with the pitcher, and one end of the water outlet pipe is communicated with the pitcher, while the other end is communicated with the water-outlet valve; a base is arranged in the intracavity of the casing, the pitcher is arranged on the base in a detachable connecting type, ahead cover assembly is arranged at the upper end of the casing corresponded with the base, wherein, one side of the head cover assembly is hinged on the casing, while the other side is clasped with the locking device arranged on the casing, and a compaction and sealing device matched with the pitcher is arranged on the head cover assembly. The drinking water machine has the advantages of taking out the pitcher for a thorough cleaning conveniently, and preventing internal water overflow phenomenon.