A method for regulating output characteristics of a photovoltaic module and a DC/DC converter are provided. The DC/DC converter connected with the photovoltaic module determines whether an output voltage of the DC/DC converter detected in a real-time manner is greater than a first preset voltage threshold, and controls an output current of the DC/DC converter to be greater than a first preset current threshold and less than zero or control an output power of the DC/DC converter to be greater than a first preset power threshold and less than zero, in a case that the output voltage is greater than a first preset voltage threshold.
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