Abstract: Based on the road and railway traffic and economic data of Heilongjiang in 2015, 2019 and 2023, an evaluation model is established to measure the strength of transportation accessibility and tourism economic linkage, and then the coupling and coordination relationship and spatial pattern between them are discussed. The results show that: ①There is a significant difference in traffic accessibility between east and west, but it is improved year by year. The west is better than the east, and the relative difference is 463.033 reduced to 377.176. ②The tourism economic relationship presents a “core-edge” polarization pattern, with Harbin as the radiation center, forming a high intensity relationship with Qiqihar and Suihua, and the marginal region has a significant attenuation. ③The coordination of transportation and tourism economic system is insufficient, the coupling coordination level is concentrated in the barely coordination and the verge of imbalance, and the main mode is medium transportation accessibility-low tourism economy (M-L). Therefore, the government and relevant departments should speed up the construction of transportation in the eastern region, drive the development of tourism economy with transportation, and provide continuous impetus for the growth of regional tourism economy.

Key words: transportation accessibility, tourism economic linkages, gravitational models, ice and snow tourism