A scroll compressor in which a winding angle of a first lap is larger than a winding angle of a second lap, a plurality of compression chambers are formed between the first lap and the second lap, the compression chambers include at least a first compression chamber and a second compression chamber that has a volume smaller than the first compression chamber, a first base plate is provided with a first injection port 16a for injection of refrigerant into the first compression chamber and a second injection port for injection of refrigerant into the second compression chamber, and an injection flow rate of the second injection port is higher than an injection flow rate of the first injection port.