Portable rack

The utility model relates to a portable rack, which comprises a telescopic upright post, a bottom frame for supporting the upright post, a folding arm which is arranged at the moving end of the upright post and can be folded and stored, and a fixed seat arranged at the overhanging end of the folding arm, the stand column comprises a lower column and an upper column capable of moving in a lifting mode. The folding arm comprises an arm frame with the two ends hinged to the fixing base and the upper column respectively, a connecting rod with the two ends hinged to the fixing base and the upper column respectively, and a telescopic device with the two ends hinged to the upper column and the connecting rod respectively. A seat plate for mounting the X-ray machine and a locking mechanism for positioning the X-ray machine are arranged on the fixed seat. According to the utility model, the structural design is reasonable, and the foldable underframe and the telescopic upright post are designed and matched with the fo