The invention discloses a fused deposition modelling printing head with a fluid circulation temperature-control function. The fused deposition modelling printing head comprises a cooling tube, wherein a thread pipeline is arranged outside the cooling tube; a cooling liquid guide-in pipeline and a cooling liquid guide-out pipeline are arranged in a cooling body; the cooling liquid guide-in pipeline, the thread pipeline and the cooling liquid guide-out pipeline form an interior flowing pipeline for a cooling liquid in the printing head; the cooling liquid guide-in pipeline is connected with an outlet of a cooling liquid inlet pipe through a cooling liquid inlet pipe connector; an inlet of the cooling liquid inlet pipe is connected with an outlet of a water pump; an inlet of the water pump is connected with an outlet of a radiator through a radiator outlet pipe; an inlet of the radiator is connected with the cooling liquid guide-out pipeline through a cooling liquid outlet pipe and a cooling liquid outlet pipe connector, so as to form a fluid circulation system. Through addition of the fluid circulation temperature-control system in the printing head disclosed by the invention, a temperature of a throat pipe can be timely lowered, clearance backflow during a high-temperature printing process can be improved, and stable printing accuracy is kept during a long-time continuous printing process.