“市场永远不变的规则就是市场永远在变。”企业必须随时调整发展战略和经营策略，作出科学正确的决策。而正确的决策不是靠直觉和猜测得到的，它必须以不断变化的、大量的市场信息为依据。市场调查的任务就是为企业营销决策部门提供相关的、准确的、可靠的、有效的、当前的信? “The rule that the market will never change is that the market will change forever.” Enterprises must adjust their development strategies and business strategies at any time to make scientific and correct decisions. And the right decision is not based on intuition and guessing. It must be based on ever-changing and abundant market information. The task of market research is to provide relevant, accurate, reliable, valid, current letter for the enterprise marketing decision-making department.