Longwall is the widely used mining method in the word and in Vietnam due to the high production and high level of safety. To maintain production as scheduled, the stability of a longwall face is of great importance, especially at areas adjacent to gateroads where ground pressure is strongly concentrated. This paper presents a study on the stability of longwall faces adjacent to gateroads under medium and hard-to-cave roofs. By using theoretical and field measurement methods, the authors conclude that in such geological conditions, the ground pressure at face adjacent to gateroads increases and decreases cyclically. At the study site, the ground pressure fluctuates in the range of 20÷26 MPa, and the piston chainage changes in the range of 0.6÷0.9 m. The face stability is closely related to ground pressure and roof stability. The study demonstrates that the face area near tailgate appears to be less stable compared to that near maingate, and initial signs of roof weighting can occur. The paper’s results serve as fundamental science assisting mining engineers in better identifying longwall face stability, from which effective prevention and remedy measures can be developed.