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Aiming at the problem that the convergence time of the chaotic finance/economic system cannot be set independently and the continuous macro-control is required, this paper investigates the predefined-time control of the chaotic finance/economic system based on event-triggered mechanism. The predefined-time control approach ensures the chaotic finance system quickly converge to the stable state within a pre-determined time. Moreover, in order to avoid continuous macro-control, an event-trigger mechanism is added into the above predefined-time control approach, which guarantees that the control input is updated only when some predefined event occurs. Rigorous theoretical derivation is presented and concrete simulation experiments are carried out to validate the feasibility and applicability of the proposed control strategy.