The invention discloses an ink supply device ink nozzle assembly. The ink supply device ink nozzle assembly comprises a female head shell, the female head shell and an ink bag are assembled together,and a first ink passing hole is formed in the female head shell. The ink supply device ink nozzle assembly further comprises a rotation piece, the rotation piece can cooperate with the female head shell to rotate and is provided with an ink passing cavity, and the ink passing cavity is connected or disconnected with the first ink passing hole along with the rotation angle of the rotation piece. According to the ink supply device ink nozzle assembly, by arranging a rotation mode, the effect that ink in the ink bag communicates with an ink supply pipeline of a printer system is achieved, the structure is reasonable, negative factors caused by contact pins are avoided, and the ink supply device ink nozzle assembly has the quite high safety, applicability and reliability in the using process.