Roof panel supporting leg

The utility model relates to the field of roof panel installation, in particular to a roof panel supporting foot. The fixing device comprises two fixing plates, the fixing plates are oppositely arranged and used for being fixed to purlins, the fixing plates are connected with connecting plates, the connecting plates are obliquely arranged, and a supporting plate is fixedly connected between the tops of the two connecting plates. The upper surface of the supporting plate is fixedly connected with a positioning screw rod, the positioning screw rod is sleeved with a pressing plate, the pressing plate is provided with a through hole for the positioning screw rod to penetrate through, and a gap is formed between the positioning screw rod and the inner wall of the through hole. The top end of the positioning screw is in threaded connection with a positioning block, the bottom wall of the positioning block is connected with an elastic piece, the elastic piece exerts vertically-downward abutting force on the pressing