A 3D swing simulation electronic candle lamp includes a retaining device and a swing device. The swing device is installed on the retaining device. The swing device is able to swing in an upright direction. A fake flame is provided and retained on the swing device. The beneficial effect of the present invention is that the fake flame is provided and retained on the swing device and the swing device is installed on the retaining device, enabling the fake flame to swing freely in an upright direction along with the swing device so as to imitate the swing effect of a real flame.