Portable safety ladder

A portable safety ladder, comprising:

• a ladder body (10) including a first frame (20) and a second frame (30) that, when the ladder is unfolded, are spread apart from each other about an upper hinge axis to maintain an A-shape, and when the ladder is folded, are completely folded about the hinge axis;
• and
• an upper safety rail (40) provided in a loop shape on an upper portion of the ladder body (10) to prevent a worker riding on a work platform (15) of the ladder body (10) from falling down,
• wherein the upper safety rail (40) is provided above a pair of base members (50) that are assembled to move up and down with respect to the first frame (20), and
• the upper safety rail (40) is provided in a rotary type, so that when the ladder is folded, the upper safety rail (40) is completely folded toward the second frame (30) side and comes into close contact with the second frame (30).