The formulation to calculate the number of Kanban provided by Mondon is improved.Procedure and strategy are brought forwards to deal with the variation in the operation of kanban system.

• 分析了看板系统设计中需要考虑的因素,针对看板运行中变异的控制,改进了传统看板参数计算公式,提出了看板系统设计和运行中处理变异的控制策略。