Abstract: Heuristics induce and influence scientific judgment, but to refine and use it are still difficult to reason. A heuristic is a thinking model that simplifies complex problems into specific situations, or it analogies to a simplified scientific reasoning process. Its methodological role is faced with many difficulties in practice, and when it is used to solve specific problems, its application ability is systematic deviation. Perhaps one of the reasons is that heuristics hide errors and lead to inaccurate scientific judgments. The "thinking responsibility" for false judgment traces back to the need for meta-heuristics . The heuristic can be understood as a useful and effective thinking model, if the loss of "meta" analysis, the scientific value and the value of knowledge will be reduced; introducing meta-heuristic as second order thinking, and defining the scope of heuristic correction, that will enhance the scientific judgment.