Bonding terminal protection device

The utility model provides a ground terminal protection device, belongs to the technical field of automobiles, and solves the technical problem that a short circuit is easy to occur at the joint of a ground terminal and a ground mounting seat of an existing three-in-one controller. The iron terminal protection device comprises a protection sleeve shell, and the protection sleeve shell is provided with a containing cavity, a sleeving opening and an installation opening. The sleeving opening and the mounting opening are communicated with the accommodating cavity; and a first clamping groove is formed in the accommodating cavity. When the grounding terminal protection device is used, the joint between the grounding terminal and the grounding mounting seat is located in the accommodating cavity, so that the protection sleeve shell plays a role in protecting the joint between the grounding terminal and the grounding mounting seat; therefore, the probability of short circuit and corrosion at the joint between the g