The present disclosure proposes a charging circuit and a mobile terminal. The charging circuit includes: a first circuit, coupled to a charging port, to draw DC power signal, and convert the DC power signal into AC power signal; a second circuit, coupled to the battery, configured to receive the AC power signal from the first circuit, and convert the AC power signal into DC power signal for charging the battery; a capacitance coupling component, coupled between the first circuit and the second circuit. The capacitance coupling component is configured to block DC power signal from the first circuit. That is, the DC power signal fails to pass through the first circuit. Thus, the DC power signal flowing through the charging port does not flow to the second circuit and the battery directly when the first circuit malfunctions. Accordingly, the stability of the charging circuit is enhanced.