An automobile calibration device, comprising: a support apparatus; and a position adjustment apparatus, the position adjustment apparatus being mounted at the support apparatus; a clamping apparatus, a slide apparatus and a scale; wherein the position adjustment apparatus comprises: a slide member; a supporting member, the supporting member being movably mounted at the slide member, the supporting member being configured to support the clamping apparatus, one of the slide member and the supporting member comprising a first member; an adjustment member, the adjustment member comprising a second member, the second member being meshed with the first member and being capable of driving the first member to move in a horizontal direction, to enable the supporting member to move in the horizontal direction with respect to the slide member; wherein the slide apparatus comprises a guiderail, a slide assembly and a hanging assembly; the guiderail is mounted at the clamping apparatus, so that the guiderail moves with the supporting member in the horizontal direction with respect to the slide member; the slide assembly is mounted at the guiderail and the slide assembly is horizontally movable with respect to the guiderail; the hanging assembly is fixedly mounted at the slide assembly and is slidable with the slide assembly along the guiderail and is configured to hang a calibration assistance device. a support apparatus; and a position adjustment apparatus, the position adjustment apparatus being mounted at the support apparatus; a clamping apparatus, a slide apparatus and a scale; wherein the position adjustment apparatus comprises: a slide member; a supporting member, the supporting member being movably mounted at the slide member, the supporting member being configured to support the clamping apparatus, one of the slide member and the supporting member comprising a first member; an adjustment member, the adjustment member comprising a second member, the second member being meshed with the first member and being capable of driving the first member to move in a horizontal direction, to enable the supporting member to move in the horizontal direction with respect to the slide member; wherein the slide apparatus comprises a guiderail, a slide assembly and a hanging assembly; the guiderail is mounted at the clamping apparatus, so that the guiderail moves with the supporting member in the horizontal direction with respect to the slide member; the slide assembly is mounted at the guiderail and the slide assembly is horizontally movable with respect to the guiderail; the hanging assembly is fixedly mounted at the slide assembly and is slidable with the slide assembly along the guiderail and is configured to hang a calibration assistance device. a slide member; a supporting member, the supporting member being movably mounted at the slide member, the supporting member being configured to support the clamping apparatus, one of the slide member and the supporting member comprising a first member; an adjustment member, the adjustment member comprising a second member, the second member being meshed with the first member and being capable of driving the first member to move in a horizontal direction, to enable the supporting member to move in the horizontal direction with respect to the slide member; wherein the slide apparatus comprises a guiderail, a slide assembly and a hanging assembly; the guiderail is mounted at the clamping apparatus, so that the guiderail moves with the supporting member in the horizontal direction with respect to the slide member; the slide assembly is mounted at the guiderail and the slide assembly is horizontally movable with respect to the guiderail; the hanging assembly is fixedly mounted at the slide assembly and is slidable with the slide assembly along the guiderail and is configured to hang a calibration assistance device.