Provided is an external mounted living water drinking system for enabling the drinking water for pets to be in contact with a living water state, wherein an outlet of a water storage unit for storing drinking water receives a stop and guide slot extended from a basic water drinking area included in a water drinking unit for pets. Therefore, when water is guided into the basic water drinking area, the turning bases joined in a predetermined range can be used to outwardly exhaust water guided therein by one end of a submerged motor in a predetermination orientation, so as to generate a blocked rushing water drinking state along at least one segment or more than one blocking area formed by the predetermined segments of the turning bases. As a result, in addition to being drunk by pets, the water fallen into the basic drinking water area can be again guided upwardly into the turning bases by means of the submerged motor, so that the water drinking unit can constitute a continuous circulating flowing state for the water linked with the water storage unit.一種外掛式活水飲水系統，是對為使寵物的飲用水獲有活水狀態是採在：盛入飲用水的盛水單元出水口是允許置入供應寵物的飲水單元含括的一基礎飲水區延伸的一截引導槽，使水在引入基礎飲水區能藉預設範圍結合的轉折座將受到沉水馬達一端上引入的水作預設方位的外排出，並沿著轉折座預設段落形成的至少一段或以上的阻擋區使產生一受阻的激流飲水狀態，使得落入基礎飲水區的水除了供應寵物飲用外亦可藉其間的沉水馬達將水再度朝上引入轉折座，使飲水單元能對銜接自盛水單元的水形成一持續的循環流動狀態。
