Inclusion Criteria:  18-70 years old, BMI 18.5-40 kg/m2, fasting blood glucose within 7mmol/L; weight fluctuation within 3 months does not exceed 5%; The volunteers had no history of serious cardiovascular, liver, kidney, respiratory, blood, endocrine, immune, neuropsychiatric and other diseases within 1 year, and were in good general health at the time of enrollment; Willing to accept a prescribed diet test every 3-9 days for 4 consecutive times, and are willing to keep samples of blood, urine, feces, and tears; Those who can communicate well with the investigator and understand and comply with the requirements of this experiment.  Exclusion Criteria:  Active eating disorder; previous history of bariatric surgery; Diabetes; Those who have had serious gastrointestinal diseases in the past; Diarrhea, nausea and vomiting in the past 2 weeks; Patients with significant dysfunction of heart, liver, kidney, and systemic organs (NYHA heart function grade ≥ II; ALT and/or AST increased to more than 5 times the upper limit of normal; GFR <30 ml/min), or malignant tumors Medical history Those who have drug abuse or alcohol addiction; Patients with severe mental or neurological diseases; Pregnant women, breastfeeding women, or women who plan to give birth within the past month; Those who have special dietary requirements or have food allergies such as soy products and dairy products; Participating in other clinical trials.