The invention discloses a common polymerization row-up combined type heat exchanger. The common polymerization row-up combined type heat exchanger comprises a plurality of plate type heat exchange units which are the same in water path structure, and are sequentially arranged and combined, so that a water inlet communicates with a water outlet; each water path structure comprises a left runner, a right runner, a lower runner, a left inner runner and a right inner runner which communicate, and are bent; each left runner and each right runner communicate with each other at the water inlet, and are collected to the corresponding lower runner; each left inner runner and each right inner runner are distributed at the two sides of each lower runner; and each left inner runner and each right inner runner are collected to the water outlet to discharge water. The common polymerization row-up combined type heat exchanger has the characteristics of being simple and practical in structure, low in batch manufacturing cost and wide in application, and has the advantages of being high in heat exchange rate, energy-saving and environmentally friendly, durable in use, and the like. Therefore, the common polymerization row-up combined type heat exchanger is a product with senior technical character, practicability and economical efficiency.