1. A method for realizing interaction in augmented reality, comprising the following steps: collecting a frame image and uploads the frame image; recognizing a template image that matches the frame image and returning the template image; detecting a marker area of the frame image according to the template image; and superposing media data corresponding to the template image on the marker area and displaying the superposed image; wherein the step of detecting the marker area of the frame image according to the template image comprises: obtaining feature points in the frame image according to training data corresponding to the template image; and obtaining a contour location of the marker area in the frame image according to the feature points; and wherein before the step of detecting the marker area of the frame image according to the template image, the method further comprises; detecting the stored template image to obtain the feature points and determining whether the number of the feature points is smaller than a threshold, and if it is not, then obtaining a sample image corresponding to the template image, and detecting feature points in the sample image; and processing the feature points in the template image and in the sample image to generate the training data recording the feature points.