| Opened | 1934 - 1936 | Takanosu - Aniai as JNR Aniai line |
| 1963 | Aniai - Hitachinai | |
| 1970 | Kakunodate - Matsuba as JNR Kakunodate line | |
| 1989 | Hitachinai - Matsuba | |
| Owner change | 1986 | From JNR to Akita Nairiku Jūkan Railway |
| Tracks | Single track |
| Mapion | Major stations | Connecting lines | Km | City | Prefecture | |
| Map | Map | Takanosu | JR East: Ōu Hon (Akita - Aomori) | 0.0 | Kitaakita-shi | Akita |
| Map | Map | Aniai | | 33.0 | Kitaakita-shi | |
| Map | Map | Hitachinai | | 46.0 | Kitaakita-shi | |
| Map | Map | Matsuba | | 75.0 | Senboku-shi | |
| Map | Map | Kakunodate | JR East: Akita Shinkansen, JR East: Tazawako | 94.2 | Senboku-shi |
| Type | Name | Origin - Major stops - Destination | Trains per day | Fastest train | Average speed |
|---|---|---|---|---|---|
| Express Kyūkō 急行 | Moriyoshi もりよし | Takanosu - Aniai - Kakunodate | 1 | 1h56 | 49 km/h |
| Aniai - Kakunodate (this direction only) | 1 | 1h08 | 54 km/h | ||
| Local Futsū 普通 | Takanosu - Aniai | 6 | 54 min | 37 km/h | |
| Takanosu - Aniai - Kakunodate | 5 | 2h26 | 39 km/h | ||
| Aniai - Kakunodate | 4 | 1h17 | 48 km/h |