An aquarium constant temperature regulating system based on online monitoring technology, comprising a remote control terminal (1), a drain valve (2), an aquarium (3), a water pump (6), a buffer pool (7), a filtering means (8), a temperature controller (10) and a temperature sensor (11), the drain valve (2) being connected to the aquarium (3), the buffer pool (7) being connected to the filtering means (8). The aquarium constant temperature regulating system based on online monitoring technology can guarantee the remote control of the user by means of a wireless communication module, improving the practicability of the system. By means of monitoring the temperature within the aquarium (3) and the buffer pool (7) with the temperature sensor (11), and by means of changing a thermistor (RT), said system controls the switch of a differential amplifier to control the operation of a heating wire (KL), so as to control in real time the temperature within the aquarium (3) and the buffer pool (7) and keep the temperature therein consistent, such that fish can adapt to new water when the water is changed. More than this, by means of monitoring the content of dissolvable oxygen with a dissolved oxygen meter (4), and by means of controlling the concentration of dissolvable oxygen with an oxygen pump (5), said system helps fish live in an optimum environment, further improving the survival rate thereof.Linvention concerne un système de régulation de température constante pour un aquarium basé sur une technologie de surveillance en ligne, comprenant une borne de commande à distance (1), une soupape de purge (2), un aquarium (3), une pompe à eau (6), un bac tampon (7), un moyen de filtration (8), un régulateur de température (10) et un capteur de température (11), la soupape de purge (2) étant reliée à laquarium (3) et le bac tampon (7) étant relié au moyen de filtration (8). Le système de régulation de température constante pour un aquarium basé sur une technologie de surveillance
