A direct current breaker topology with a bidirectional blocking function is disclosed. The direct current breaker topology comprises a main loop module (1), a fault current blocking module (2), a first diode group (3) and a second diode group (4); the first leading-out terminal of the main loop module (1) is connected with the positive electrode of the first diode group (3), and the connecting point between the first leading-out terminal of the main loop module and the positive electrode of the first diode group is used as the first leading-out terminal (5) of the direct current breaker topology; the second leading-out terminal of the main loop module (1) is connected with the positive electrode of the second diode group (4), and the connecting point between the second leading-out terminal of the main loop module and the positive electrode of the second diode group is used as the second leading-out terminal (6) of the direct current breaker topology; the negative electrode of the first diode group (3) is connected with the negative electrode of the second diode group (4); and the second leading-out terminal of the fault current blocking module (2) is used as the third leading-out terminal (8) of the direct current breaker topology.