Material handling method and device, server, and handling robot

A material handling method, comprising:

• acquiring a handling task sequence to execute a first handling task;
• and
• executing a second handling task during an execution process of the first handling task, wherein the first handling task is a material fetching task and the second handling task is a returning task;
• wherein the second handling task is obtained during the execution process of the first handling task, or the acquired handling task sequence comprises the second handling task;
• when a return position of a second target corresponding to the second handling task is a position of an idle storage site, the return position of the second target is the acquired positions corresponding to U idle storage sites from the second handling task;
• wherein distances between the positions corresponding to the U idle storage sites and a robot material fetching path are within a first preset range;
• and/or distances between the positions corresponding to the U idle storage sites and the robot are within a second preset range;
• wherein U is a natural number greater than 0;
• and the material fetching path is generated according to position information and a position of the first target comprised in the first handling task.