Yellow-throated marten (Martes flavigula aterrima) is a typical forest dweller that is extremely sensitive to human disturbance and habitat fragmentation, and is regarded an indicator species of forest ecosystems. Aiming to scientifically and effectively conserve the yellow-throated marten, 642 infrared cameras were set up in southern Laoyeling, Heilongjiang Province from 2020 to 2021 to collect datasets on the activity locations. The habitat suitability of the yellow-throated marten was analyzed by the MaxEnt method, and the key environmental factors affecting the survival of the yellow-throated marten population. In order to explore the habitat connectivity of the yellow-throated marten's population in the study area, we conduced ecological corridor study using the least-cost path method, and the results of this study showed that: (1) The average AUC (Area under ROC curve) value of Receiver Operating Characteristic (ROC) curve evaluation results of MaxEnt was 0.861, which could better reflect the actual distribution of habitat suitability of the yellow-throated marten in the study area. (2) Among the 13 variables included in this study, the yellow-throated marten had the highest probability of occurrence at about 12 km from Amur tiger (Panthera tigris altaica) and Amur leopard (Panthera pardus orientalis), and the variable contribution rate was 20.6%, which was considered as the key variable affecting the habitat selection of the yellow-throated marten.It was proved that the yellow-throated marten avoided Amur tigers and Amur leopards. In addition, Slope (9.9%), farmland (9.5%), grassland (9.0%), evergreen coniferous forest (8.9%), road (7.0%), river (6.6%), settlement (6.1%) and altitude (5.9%) were the secondary variables affecting the habitat quality of the yellow-throated marten. (3)The suitable habitat area of the yellow-throated marten in the study area was 793.54 km², accounting for 21.4% of the total area of the study area, which was mainly distributed in the Liuqiaogou, Qingshan and Wanbaowan forest farms of Suiyang Forestry Company of Heilongjiang Province. Although the area of suitable habitat in the study area was large, highly fragmented. Therefore, 15 core habitats with a total area of 401.61 km² were obtained through the habitat suitability distribution map. Finally, 14 ecological corridors were constructed to facilitate the ecological restoration and management of the yellow-throated marten habitat in the study area. This study provides a comprehensive analysis of the habitat status and connectivity of the yellow-throated marten, so as to formulate corresponding conservation plans, which can effectively promote the spread, connectivity, and suitability of the habitat in the southern of Laoyeling, Heilongjiang Province.