ISOFIX adjusting device of child safety seat for passenger car

The invention discloses an ISOFIX adjusting device of a child safety seat for a passenger car. The ISOFIX adjusting device comprises ISOFIX connectors, an upper pressing plate, a lower pressing plate, a threaded rod, a first square tube, release buttons, a second square tube and a connecting tube. The first square tube and the second square tube are arranged in parallel, and the middle of the first square tube and the middle of the second square tube are welded together through the connecting tube. The ISOFIX connectors are arranged at one end of the first square tube and one end of the second square tube respectively. The release buttons are arranged on the outer side face of the first square tube and the outer side face of the second square tube respectively. The threaded rod is arranged between the upper pressing plate and the lower pressing plate. In this way, by means of the ISOFIX adjusting device of the child safety seat for the passenger car, the child safety seat can be conveniently used in cooperation with a passenger car seat after being installed on the passenger car; the position, stretching and retracting of the ISOFIX connectors can be adjusted, and the operation process is simple and convenient; safety performance of the child seat is improved, and riding comfort is improved.