A simulation device and a simulation method of mixer for secondary battery production are provided. The simulation device includes a memory configured to store at least one instruction; and at least one processor configured to execute the at least one instruction stored in the memory. The at least one instruction includes instructions for: executing an apparatus operating unit including a mixer model apparatus related to secondary battery production; executing a facility operating unit including a plurality of adjustment parameters for determining operation of the mixer model apparatus and quality information related to a quality of a material produced by the mixer model apparatus; obtaining at least one of first user condition information or first user action information input through at least one of the facility operating unit or the mixer model apparatus; determining an operation of the mixer model apparatus based on at least one of the obtained first user condition information or first user action information; and executing an operation of measuring, mixing, and transferring a plurality of raw materials related to the mixer model apparatus based on the determined operation.