The utility model discloses a drilling device capable of increasing drilling pressure locally. The drilling device comprises a barrel-shaped body (1), wherein a rotary turbine section (2) is arranged in an upper section of the body (1), an inner barrel (3) is arranged in a lower section of the body (1), the lower end of the turbine section (2) is provided with an upper bevel gear (25), and the upper end of the inner barrel (3) is provided with a lower bevel gear (31) matched with the upper bevel gear (25). The drilling device can increase the drilling pressure locally and improves the mechanical drilling speed; when a drill bit drills a rock, the axial motion range is small, the drill bit is not prone to being damaged, and service life of the drill bit is beneficially prolonged; additionally, the drilling device is simple in structure, convenient to operate, low in investment cost and capable of being widely used in oil and gas filed drilling operation.