This study is prospective, single-center, single-arm objective performance criteria.

This trial will be conducted with a total of 47 subjects enrolled. All of subjects will be treated with radiation therapy using the medical device Varian ProBeam Proton Therapy System (ProBeam), aim to compare the data with objective performance criteria (OPC) to evaluate the effectiveness and safety of ProBeam radiotherapy system for oncology patients, providing a clinical basis for the medical device registration.

Oncology patients, including tumors of head and neck, chest, abdomen, spine, pelvic cavity, extremities and other tumors. The screening period from informed consent to enrollment is expected to be 2 weeks, while the treatment period depends on patient medical situation and treatment plan. The period after the last treatment is divided into short-term follow-up which is 90 days after treatment completion and long-term follow-up which is 5 years after treatment completion. The clinical trial with short-term follow-up fulfills the requirements for National Medical Products Administration (NMPA) regulatory registration. All the end points claimed will be achieved in the short-term follow-up stage. The trial is defined as completion once short-term follow-up is finished.

And long-term follow-up report will be submitted for future post market evaluation when requested by NMPA.

Inclusion Criteria (Major Criteria):

1. Patients diagnosed with histological/pathological diagnosis and/or with imaging, laboratory examination and other evidence, clinically diagnosed as benign and malignant intracranial tumors, and malignant solid tumors of the head and neck, chest, abdomen, spine, pelvis, and extremities;
2. Eastern Cooperative Oncology Group (ECOG) physical condition grade ≤ 2;
3. Women of childbearing had negative results in the blood pregnancy test (Human Chorionic Gonadotropin, HCG) 7 days prior to the first treatment;
4. The subject or subject's guardian is able to understand the purpose of the study, demonstrate sufficient compliance with the protocol and sign informed consent form.

Exclusion Criteria (Major Criteria):

1. There are contraindications to radiation therapy, including congenital susceptibility to ionizing radiation hypersensitivity; or the presence of comorbidity that may lead to ionizing radiation hypersensitivity, which will increase the sensitivity of normal tissues to radiation therapy;
2. The tumor recurring at the same site has received two or more radiotherapy treatments;
3. Active implants such as cardiac pacemakers, defibrillators, cochlear implants, drug infusion pumps, other nerve stimulators, etc. (whether they are turned on or not) within the scope of radiotherapy ; or passive implants that affect radiotherapy thing;
4. Other situations that investigator determines not suitable for enrollment.