Rotary jet spinning machine

A rotary jet spinning machine includes a box, a container, a driving device, a heating device, several jet devices, a thread collecting portion, a cover, and a temperature sensor. The box has an inner space. The container is disposed in the inner space and can hold a thread raw material. The driving device is connected to the container through a coupling, and can drive the container to rotate. The heating device is disposed around a side wall of the container, and can heat the thread raw material in the container. The jet device is inserted in the side wall of the container, and can inject the heated thread raw material to form several threads when the container rotates. The thread collecting portion is disposed in the inner space, and is disposed outside the container and the heating device. The cover is placed on the container. The cover has a through hole. The temperature sensor is disposed above the box, and can directly sense a temperature of the thread raw material through the through hole.