The invention discloses a gate driving circuit with a protection function for an enhanced GaN power device. The circuit comprises an interface circuit H, an interface circuit L, a dead zone generatingcircuit, a level shifting circuit, a low-end delay matching circuit, a driving circuit H, a driving circuit L, an undervoltage lockout circuit H, an undervoltage lockout circuit L, an overcurrent protection circuit, and an overheat protection circuit. The driving circuit can automatically detect the chip overheating, undervoltage or overcurrent of voltage and power supply, and turns off the GaN power device for protection to ensure that its operating characteristics are in a safe zone.