This is a Phase 1, open-label, randomized, three-period crossover trial study to evaluate the effect of food and dosing and meal timing intervals on the pharmacokinetics (PK) of HSK46575 in healthy adult participants ,with an exploratory assessment of excretion pathways and excretion rates. Safety and tolerability will also be evaluated.

The study consists of 3 treatment sequences in a 3-period, crossover design. Approximately 15 healthy adult participants will be randomized 1:1:1 to one of the following sequences:

Sequence A: Participants will receive HSK47388 orally in the fasted state (condition 1), administrate HSK47388 immediately after low-fat meal (condition 2), administrate HSK47388 in the fasted state, followed by a standard meal speicific minutes later（condition 3）.

Sequence B: Participants will receive administrate HSK47388 immediately after low-fat meal (condition 2), administrate HSK47388 in the fasted state, followed by a standard meal speicific minutes later（condition 3），HSK47388 orally in the fasted state (condition 1).

Sequence C: Participants will receive HSK47388 in the fasted state, followed by a standard meal speicific minutes later（condition 3),HSK47388 orally in the fasted state (condition 1), administrate HSK47388 immediately after low-fat meal (condition 2) .

All participants will remain under clinical observation for safety monitoring and pharmacokinetic sampling throughout each period. Blood, urine and fecal samples will be collected at defined intervals for the analysis of HSK47388 and its metabolites.

Each participant's total study duration will be approximately 37 days, including screening, treatment, and follow-up.

Inclusion Criteria:

1. Must have given written informed consent before any study-related activities are carried out and must be able to understand the full nature and purpose of the study, including possible risks and adverse effects.
2. Adult males and females between ≥ 18 and ≤ 55 years (inclusive) at Screening.
3. Able and willing to attend the necessary visits to the study site

Exclusion Criteria:

1. Participants with any disease history that may affect the safety evaluation or in vivo process of IP as judged by the PI or delegate, including central nervous, cardiovascular, digestive, respiratory, urinary, blood, immune and endocrine diseases. Participants with childhood asthma (resolved) can be included at the discretion of the PI.
2. Underlying physical or psychological medical condition that, in the opinion of the PI or delegate, would make the participant unlikely to comply with the protocol or complete the study per protocol.
3. Participants who may not be able to complete the study for other reasons, cannot comply with the requirements of the study, or are unsuitable to participate in the study as judged by the PI or delegate.

for data confidence