A command controlling method and a command controller for controlling execution of a plurality of commands on a remote machine are provided. The command controlling method includes determining a priority of each of the plurality of commands according to predetermined properties of the command, determining command package maximum total execution time according to a current workload of the remote machine, packaging the plurality of commands into one or more command packages in a descending order of priority according to the maximum total execution time, and sending the one or more command packages to the remote machine. By means of the command controlling method and the command controller, execution of commands in a cloud environment may be optimized to improve performance of the cloud environment.