With the development of improved augmented reality (AR) devices, the use of AR in new media to better communicate culture has become a major trend. However, AR technology algorithms still have many shortcomings, and this paper proposes a new algorithm that shows that the proposed algorithm is better than traditional terrain generation algorithms in terms of display and granularity and less costly than traditional geographic algorithms, according to the proposed algorithm, traditional genealogy algorithms and terrain sequencing algorithms. Therefore, the proposed area adjustment algorithm in this paper can improve the lower cost of equipment to reflect the impact of the geographic information scene function in the attachment, thus optimising the use of AR technology in new media, and the combination of the two allows the dissemination of traditional culture to be enhanced in many ways.