Portable oil storage tank

The utility model relates to a portable oil storage tank which is characterized in that an assembly frame is provided with a sling fixing assembly connected with a PVC tank body, the assembly frame is provided with a movable positioning mechanism connected with the sling fixing assembly, the sling fixing assembly comprises a movable seat connected to the outside of the assembly frame in a sliding mode, and the top of the movable seat is fixedly provided with a rope penetrating seat; a rope penetrating hole is formed in the front surface of the rope penetrating seat, a positioning groove communicating with the rope penetrating hole is formed in the rope penetrating seat, a mounting frame is fixedly mounted at the top of the rope penetrating seat, sliding grooves are formed in the left side wall and the right side wall of an inner cavity of the mounting frame, and a sling fixing rod penetrating through the rope penetrating seat and inserted into the positioning groove is slidably connected between the two slidi