Abstract: A portable ladder for truck trailers including a post, a hand grip attached to the post, at least a first step connected to the post, and a stake connected to the post is adapted to be used in conjunction with a flat-bed trailer having a body and a protective rail. The stake is adapted to removably and slidably mount in the space between the body and the protective rail with the stake being inserted into the space until a support plate rests flush against the top of the trailer body. The steps extend outwardly and alternately from opposite sides of the staff. The stake forms an angle with the post such that when the stake is installed in the space between the body and the rail of the flat-bed truck, the lower end of the staff extends downward and outwardly from the truck so that a person can easily climb up the ladder onto the trailer while having a hand grip to hold onto.