A non-clogging pump (100, 200) for pumping fluid containing foreign matter, the non-clogging pump (100, 200) comprising: a pump casing provided with a suction port; and an impeller that includes a main plate portion and two or more vane portions that are disposed on a suction port side of the main plate portion, is fixed to one end of a rotating shaft, and is disposed inside the pump casing, wherein the main plate portion includes a main plate protrusion portion that protrudes in a counter-inflow direction that is a direction opposite to an inflow direction of water from the suction port, which substantially coincides with an axial direction of the rotating shaft, toward an inner periphery side in a radial direction of the rotating shaft, the vane portion includes a first end face that is an end face in the counter-inflow direction, which is located on an outer periphery side in the radial direction, and extends in a direction intersecting the counter-inflow direction, and a second end face that is an end face in the counter-inflow direction, which is connected to the first end face from the inner periphery side in the radial direction of the first end face and located on the inner periphery side in the radial direction, and is inclined with respect to the first end face so as to be located on a counter-inflow direction side toward the inner periphery side in the radial direction, and is connected to the main plate protrusion portion at an inner periphery-side end portion, and an inner peripheral wall that forms the suction port of the pump casing includes a suction port protrusion portion that is provided at a portion in a rotation direction of the rotating shaft, is disposed along the second end face with a gap from the second end face, and protrudes toward a center side of the suction port, characterized in that the main plate protrusion portion has, at a tip thereof, an inclined surface inclined with respect to a direction orthogonal to the counter-inflow direction, the inclined surface being configured such that when the impeller rotates, the inclined surface rotates and a force that pushes the foreign matter to the top portion of the inclined surface along the inclined surface can be applied to the foreign matter. a pump casing provided with a suction port; and an impeller that includes a main plate portion and two or more vane portions that are disposed on a suction port side of the main plate portion, is fixed to one end of a rotating shaft, and is disposed inside the pump casing, wherein the main plate portion includes a main plate protrusion portion that protrudes in a counter-inflow direction that is a direction opposite to an inflow direction of water from the suction port, which substantially coincides with an axial direction of the rotating shaft, toward an inner periphery side in a radial direction of the rotating shaft, the vane portion includes a first end face that is an end face in the counter-inflow direction, which is located on an outer periphery side in the radial direction, and extends in a direction intersecting the counter-inflow direction, and a second end face that is an end face in the counter-inflow direction, which is connected to the first end face from the inner periphery side in the radial direction of the first end face and located on the inner periphery side in the radial direction, and is inclined with respect to the first end face so as to be located on a counter-inflow direction side toward the inner periphery side in the radial direction, and is connected to the main plate protrusion portion at an inner periphery-side end portion, and an inner peripheral wall that forms the suction port of the pump casing includes a suction port protrusion portion that is provided at a portion in a rotation direction of the rotating shaft, is disposed along the second end face with a gap from the second end face, and protrudes toward a center side of the suction port,