A scroll compressor comprising: a fixed scroll having a tabular first end plate, a spiraling first lap protruding from a front face of the first end plate, and a thrust sliding portion surrounding the first lap; a movable scroll having a tabular second end plate and a spiraling second lap protruding from a front face of the second end plate; and a drive part linked to the movable scroll via a crankshaft, the drive part revolving the movable scroll; wherein the first lap and the second lap are brought together so that the front face of the first end plate and the front face of the second end plate face each other, and a compression chamber is formed between the first lap and the second lap adjacent to each other; the drive part is configured to revolve the movable scroll cyclically so that a gaseous refrigerant in the compression chamber is compressed; a back-pressure space communicating with the compression chamber on a peripheral side for at least a prescribed period in a revolution cycle of the movable scroll is formed at a back face side of the second end plate of the movable scroll; a communication hole communicating with the back-pressure space is formed in the second end plate; and there are formed, on a sliding face (R1, R2) contacting the front face of the second end plate for at least a prescribed period in the single revolution cycle of the movable scroll, in the thrust sliding portion facing the front face of the second end plate: a first oil channel extending in an arc shape in a first angle region with respect to a centre of the first end plate as seen in plan view, an oil being supplied to the first oil channel from a high-pressure space communicating with the compression chamber at high pressure and retained in the first oil channel; a communication channel (314, 314') disposed in a second angle region, which is external to the first angle region, with respect to the centre of the first end plate as seen in plan view, the communication channel communicating with the compression chamber, and, for at least a prescribed period, communicating with the communication hole; and a second oil channel (81, 81a, 81b, 81c, 81d, 82, 82') disposed in the second angle region with respect to the centre of the first end plate as seen in plan view, the second oil channel communicating with the back-pressure space for at least a prescribed period. a fixed scroll having a tabular first end plate, a spiraling first lap protruding from a front face of the first end plate, and a thrust sliding portion surrounding the first lap; a movable scroll having a tabular second end plate and a spiraling second lap protruding from a front face of the second end plate; and a drive part linked to the movable scroll via a crankshaft, the drive part revolving the movable scroll; wherein the first lap and the second lap are brought together so that the front face of the first end plate and the front face of the second end plate face each other, and a compression chamber is formed between the first lap and the second lap adjacent to each other; the drive part is configured to revolve the movable scroll cyclically so that a gaseous refrigerant in the compression chamber is compressed; a back-pressure space communicating with the compression chamber on a peripheral side for at least a prescribed period in a revolution cycle of the movable scroll is formed at a back face side of the second end plate of the movable scroll; a communication hole communicating with the back-pressure space is formed in the second end plate; and there are formed, on a sliding face (R1, R2) contacting the front face of the second end plate for at least a prescribed period in the single revolution cycle of the movable scroll, in the thrust sliding portion facing the front face of the second end plate: a first oil channel extending in an arc shape in a first angle region with respect to a centre of the first end plate as seen in plan view, an oil being supplied to the first oil channel from a high-pressure space communicating with the compression chamber at high pressure and retained in the first oil channel; a communication channel (314, 314') disposed in a second angle region, which is external to the first angle region, with respect to the centre of the first end plate as seen in plan view, the communication channel communicating with the compression chamber, and, for at least a prescribed period, communicating with the communication hole; and a second oil channel (81, 81a, 81b, 81c, 81d, 82, 82') disposed in the second angle region with respect to the centre of the first end plate as seen in plan view, the second oil channel communicating with the back-pressure space for at least a prescribed period. a first oil channel extending in an arc shape in a first angle region with respect to a centre of the first end plate as seen in plan view, an oil being supplied to the first oil channel from a high-pressure space communicating with the compression chamber at high pressure and retained in the first oil channel; a communication channel (314, 314') disposed in a second angle region, which is external to the first angle region, with respect to the centre of the first end plate as seen in plan view, the communication channel communicating with the compression chamber, and, for at least a prescribed period, communicating with the communication hole; and a second oil channel (81, 81a, 81b, 81c, 81d, 82, 82') disposed in the second angle region with respect to the centre of the first end plate as seen in plan view, the second oil channel communicating with the back-pressure space for at least a prescribed period.