Provided are a stator, a motor and a compressor for a motor. The stator (100) includes: a substantially annular stator body (1). The stator body (1) is formed by stacking a plurality of silicon steel sheets. The magnetic induction intensity of the silicon steel sheets is B, B>1.79 T. A plurality of stator teeth (2) arranged at intervals are formed on an inner peripheral wall of the stator body (1), and an accommodating groove (3) is defined between two adjacent stator teeth (2). A diameter of a circle where inner end surfaces of the plurality of stator teeth (2) are located is D1 and a diameter of a circle where an outer end of the stator body (1) is located is D2, and D1 and D2 satisfy: D1/D2>0.515.