A cervical collar is disclosed. The cervical collar includes a main collar structure and at least one flexible adjustment member. The main collar structure can be configured to attach the upper chest and the shoulder of the patient and support the head of the patient. The main collar structure further has at least one concave portion. The flexible adjustment member can be disposed to the concave portions and is provided for securing the main collar structure at the back of the neck of the patient and can be configured to form a treatment region at the back of the neck of the patient, thereby conveniently caring the patient at the treatment region.