Sample feeding rod with crucible positioning device

The invention relates to the field of crucible sample feeding and particularly relates to a sample feeding rod with a crucible positioning device. The sample feeding rod comprises a push-pull rod, wherein a sample feeding rake is arranged on the front end face of the push-pull rod; a positioning device is arranged on the push-pull rod close to one side of the sample feeding rake; when a crucible is pulled by the push-pull rod, the positioning device extends into the crucible or is in contact with the upper edges of the two sides of the crucible and is used for positioning the crucible. According to the invention, the crucible can be smoothly pulled out; when the arc surface of the crucible is irregular, the central lines of the sample feeding rod and an alundum tube are not coincided and the abnormal factors including impurities exist in the alundum tube, the sample feeding rod provided by the invention still can pull out the alundum tube through correct posture; the sample can be prevented from being blocked