The invention relates to a method for producing quartz glass fibers, in particular to a method for producing low-hydroxyl quartz glass fibers. According to the method, quartz sand is manufactured to form a coarse quartz glass rod by a continuous melting method, the coarse quartz glass rod is subjected to dehydroxylation and is melted and stretched to form a fine quartz glass rod by an electric melting method, and the fine quartz glass rod is stretched to form the quartz glass fibers by an oxy-hydrogen combustion method. According to the coarse quartz glass rod, structural vacancy caused in the process of removing metastable hydroxyl in the quartz glass rod can be repaired naturally in the process of melting and stretching the coarse quartz glass rod to form the fine quartz glass rod. By the method, the problem of high hydroxyl content of the produced fibers due to high hydroxyl content of the quartz glass rod produced by the conventional continuous melting method is avoided. According to the quartz glass fibers produced by the method, the hydroxyl content can be controlled to be about 5 ppm, so the method has the characteristics of simple production process and low requirements on the control of equipment and a production process, and is particularly suitable for producing the low-hydroxyl quartz glass fibers.