The invention discloses a reward-punishment weight type simulation sequence similarity analysis method in consideration of morphologic change, and belongs to the technical field of the power system simulation. The method comprises the following steps: acquiring to-be-analyzed simulation data, acquiring time sequences in same dimension comparison after performing averaging processing on the initialdata, and giving out the entire similarity of the software type, and computing the entire change tendency similarity of two groups of simulation data by using the slop change of the adjacent time interval data points of the simulation sequence; obtaining the analyzed and compute weight at each point by appropriately rewarding or punishing the selected initial weight according to the amplitude proportion, and finally obtaining a formula for computing the similarity of two groups of simulation sequences. The simulation result data of different software is processed from a quantitative angle, any time sequence capable of acquiring the software simulation result of different power systems can be analyzed by using this method, and the method is further applicable for the similarity analysis ofthe offline simulation and the online real-time data.