A Study of SSS17 in Healthy Subjects

Inclusion Criteria: * Body weight≥50 for male or ≥45 for female, and BMI between 19.0-26.0 kg/m2 * Good general health as determined by the investigator based on medical history, physical examination, vital signs, 12-lead ECG, clinical laboratory tests and B-type ultrasound test. * Participants of reproductive potential must agree to utilize reliable methods of contraception from screening to 6 months after the last administration of the study intervention. No plan for sperm (or egg) donation or pregnancy. * Understand and sign the informed consent. * Ability to understand and follow study-related instruction Exclusion Criteria: * A known allergy to any component of the SSS17 formulation, or allergy history of two kinds of drugs or food * Medical history or conditions of digestive system. * Female volunteers who are pregnant, menstrual, lactating or menopause with hormone therapy. * Eyes diseases, including diabetic retinopathy, age-related macular degeneration. * Vascular anomalies. * Drug, alcohol or nicotine addiction. * Blood donation or bleeding (more than 200 ml). Experience of treatment with EPO or blood transfusion. * Any findings from the medical examination (including medical history, physical examination, vital signs, laboratory tests and ECG) deviating from normal and deemed by the investigator to be of clinical relevance * Abnormal results in test of TIBC, serum iron or ferritin * Acute diseases before administration. * Other situations that the researcher believes may affect validity judgment or are not suitable for participation