Disclosed is a robot including a travelling apparatus, a body, a containing apparatus and an item grabbing apparatus. The travelling apparatus is disposed at a bottom of the robot and configured to automatically travel to a preset position based on a travelling path received by the robot. The body is disposed above the travelling apparatus. The containing apparatus is connected to the body and includes multiple containing positions that are interlayers stacked in a vertical direction. One of the interlayers may contain at least one target item. The item grabbing apparatus is disposed on the body and configured to, based on a task received by the robot, grab, at the preset position, a first target item from an item storage apparatus and automatically place the first target item at a containing position of the containing apparatus, or grab, at the preset position, a second target item from the containing position of the containing apparatus and automatically place the second target item in the item storage apparatus. A carrying system and a carrying method are further disclosed.