The invention discloses an indoor inspection robot door-passing system, which comprises a rolling door, an inspection robot, a rolling door controller, a rolling door motor, a rolling door wireless communication module, a laser transmitter and a laser receiver. The inspection robot includes a robot controller, a robot wireless Communication module and obstacle avoidance device; the present invention also discloses a door-passing method adopted by the indoor inspection robot door-passing system, including the following steps: when the inspection robot approaches the rolling door, start the door-passing mode; determine that the rolling door is completely closed; the laser emitter emits laser light; The laser receiver receives the laser light; the robot wireless communication module corrects the position; the robot controller sends the door opening command; the rolling door controller controls the opening of the rolling door; the inspection robot passes through the rolling door, and then controls the closing of the rolling door. The inspection robot of the invention can automatically judge and correct its own position, automatically control the opening of the rolling door, and automatically control the automatic control function of closing the rolling door after passing through.