This is an open-label study that will be conducted at a single site in China to characterize the PK/PD profile, safety and tolerability of Recombinant Human Serum Albumin/interferon alpha2b Fusion Protein in healthy subjects. Subjects will receive a single dose of Recombinant Human Serum Albumin/interferon alpha2b Fusion Protein or active comparator Pegasys at Day 0. The total duration of study participation is up to 6 weeks for each subject. Subjects will complete a follow-up visit at Day 28 after the dosing.