Provided are a carrying robot, a carrying control method, a control device and a warehouse system. The carrying robot is applicable to a carrying scenario where boxes with at least two specifications are placed on a shelf and includes a cargo carrying apparatus. The cargo carrying apparatus includes a bottom pallet, a spacing adjustment mechanism and a first fork arm and a second fork arm which are disposed opposite to each other. The first fork arm and the second fork arm are disposed on two opposite sides of the bottom pallet, respectively. The carrying control method includes: controlling the spacing adjustment mechanism to adjust spacing between the first fork arm and the second fork arm; and controlling the cargo carrying apparatus to work and carry the box to be carried to the bottom pallet.