Meski pengadilan lokal membebaskannya dari tuduhan doping, Komite Olahraga China menghukumnya dengan larangan bertanding dua tahun, sedang pelatihnya Wang Dexian dihukum seumur hidup.
One of her fellow athletes subsequently admitted to spiking Sun's drink to help her out. Although a local court cleared her of doping, the Chinese Olympic Committee handed her a statutory two-year ban.