To provide a new polymer which has a high fluorine content, can have polar groups in the same molecule, and can form films having high adhesiveness to substrates, to provide an anti-reflective material coated with the polymer, and to provide a photosensitive coating material or resist material.

This fluorine-containing polymer comprises ≥60 mol.% of a structure originated from a norbornene compound having a specific structure and ≥0.1 mol.% of repeating units originated from a compound containing two polymerizable unsaturated bonds in the molecule.