Both forgetting to unplug mobile phone chargers after using and generating large surge current when the charger is plugged into power, will accelerate the aging of high-voltage electronic components. It is also prone to failure and fire. In addition, the charger consumes 100~800 mW power when it is in standby mode for a long time. Therefore, a fireproof and energy saving mobile phone charger is proposed. This kind of charger can reduce the standby power consumption to 13 mW, so it is unnecessary to pull out the charger to meet the habit of the users. It can absorb the surge current, meanwhile, it also has the functions of timing charging, overcurrent and short circuit protection, so as to prevent the occurrence of fire.