According to one aspect of the disclosure, it is possible to provide a fishing spinning reel that can securely prevent penetration of seawater and foreign substances into a bearing, have a sufficient durability for use in harsh environments, a fine rotational performance, and easy handling and maintenance. In the fishing spinning reel of the disclosure, a magnetic fluid sealed bearing in which a magnetic fluid seal is provided integrally with a bearing, and a line roller is rotatably supported on a supporting shaft through the magnetic fluid sealed bearing. A magnetic fluid seal is provided on both sides of a bearing body of the bearing. Moreover, a magnetic fluid of the magnetic fluid seal includes an outer ring magnet fluid retained between an outer ring and a magnet, and an inner ring magnetic fluid retained between the inner ring and a retaining plate.
