TQB3602 is a kind of proteasome inhibitor, AK105 is an anti-programmed cell death protein 1 (PD-1) antibody.

Inclusion Criteria:

• 1 Evidence of a personally signed and dated informed consent document indicating that the patient has been informed of all pertinent aspects of the study.
• 2 Age ≥ 18; Eastern Cooperative Oncology Group perfomance status score: 0-2; at least 3 months expected survival period.
• 3 Subjects with relapse advanced malignant solid tumors clearly diagnosed by pathology and / or cytology, lack of conventional effective treatment methods, failure or relapse after treatment.
• 4 Resolved acute effects of any prior therapy to baseline severity or Grade ≤ 1 per CTCAE v5.0 except for AEs not constituting a safety risk by investigator judgment.
• 5 Must have adequate organ and bone marrow function.
• 6 Male and female patients of childbearing potential and at risk for pregnancy must agree to use two highly effective method(s) of contraception throughout the study and for at least 6 months after the last dose of assigned treatment.

Exclusion Criteria:

• 1 Subjects with other malignancies currently or suffered within 3 years. The following two conditions can be enrolled: other malignant tumors treated with a single operation to achieve disease-free survival (DFS) for 5 consecutive years; cured cervical carcinoma in situ, non-melanoma skin cancer and superficial bladder tumors[ Ta (non-invasive tumor), Tis (carcinoma in situ) and T1 (tumor infiltrating basement membrane)];
• 2 Sujects with multiple factors affecting oral administration；
• 3 Subjets with unhealed toxicity above Grade 1 Common Terminology Criteria for Adverse Events Version 5.0 due to previous antitumor treatment；
• 4 Subjects who have received major surgical treatment, open biopsy or obvious traumatic injury within 4 weeks before first administration；
• 5 Subjects who have received surgery, chemotherapy, radiotherapy or other anticancer therapies 4 weeks before the first administration.