Aiming at the problem of low positioning accuracy caused by complex terrains in scenic areas, we propose an improved two times weighted positioning algorithm based on the traditional indoor positioning algorithm LANDMARC to solve the complex positioning problem that some reference labels in scenic areas are not uniformly distributed. Firstly, the algorithm can obtain the coordinates of the labels to be located by one weighted positioning. Then, the obtained coordinates are connected with the vertexes of reference areas respectively. The reference area is divided into K triangular regions, and the centers of the inscribed circle of K triangular regions  are obtained respectively. The K centers are taken as the reference coordinate of the nearest neighbor. By setting the coefficients of the second weighting, a more accurate positioning label coordinate is calculated. Experiments on a typical scenic area show that the improved positioning algorithm has a 10.6% improvement in positioning accuracy in the complex scenic environment compared with the traditional one-time weighted positioning algorithm, which proves its better applicability in complex scenic areas.