This is a MultiCenter, Randomized, Blinded, Active Drug and Placebo-controlled, Dose-escalated Phase Ib Clinical Trial to Evaluate the Safety, Tolerability, Pharmacokinetics and Preliminary Efficacy of HEC53856 Capsules in Patients With Non-dialysis Renal Anemia. Each part participants will be randomly administrated for HEC53856 or placebo or roxadustat.~The study consisted of three study periods as follows:~Screening period: up to 2 weeks； Treatment period: 8 weeks； Post-Treatment Follow-Up period: 4 weeks.
To evaluate the safety, tolerability , pharmacokinetics and Preliminary Efficacy of HEC53856 Capsules in Patients With Non-dialysis Renal Anemia.