The rheology and spinnability of PACS with various aluminum contents were studied by a single-pole spinning equipment. It has been shown that: the melting PACS behaves to be a near-Newton fluid with increasing temperature. The viscosity of PACS strongly depends on the temperature. Its apparent viscosity energy occurs between the range of 190～260 kJ/mol when its softening point lies between the range of 190℃～220℃. Its spinnability is good when its viscosity is about 100Pa·s. It is revealed that the higher Al content in PACS will increase the viscosity, leading to a higher spinning temperature and poorer spinnability.