The invention discloses a method and a device for evaluating operation in a robot operating system. One particular implementation mode of the method comprises the following steps: acquiring the last message processing operating identifier in a target message processing operating identifier sequence; acquiring at least one message which is acquired after being processed by the message processing operation indicated by the last message processing operating identifier; and for each message in the at least one message and according to the message identifier of the information and the message processing information sequence, determining the message processing operation time for processing the message by the message processing operation indicated by each message processing operating identifier in the target message processing operating identifier sequence. By the implementation mode, the time for evaluating the operation in the robot operating system is reduced and the safety of the robot is improved.