The present disclosure provides a mobile terminal, a charging device and a charging method thereof. A first communication module is disposed in the mobile terminal and a second communication module is disposed in the charging device to perform match verification. After the match verification is successful, the mobile terminal may transmit a charging request including a charging parameter required by the mobile terminal to the charging device, and then receive first energy that matches the charging parameter and is transmitted by the charging device. After the mobile terminal converts the first energy into a direct current voltage for charging, the mobile terminal can directly use the direct current voltage corresponding to the first energy for charging.