The present invention discloses an endoscope head apparatus comprising a head mechanism, an elastic element, a support portion, a first wire, a second wire and a bilaterally flexible body. The elastic element is connected to the head mechanism and has a first accommodating space therein. The support portion is connected to the elastic element and has a second accommodating space therein. The first wire and the second wire are connected to head mechanism. The bilaterally flexible body is located at the first accommodating space, and connected to the head mechanism and the support portion respectively, and has a first bendable surface and a second bendable surface. The bilaterally flexible body can swing toward the first surface or the second surface by pulling the first wire or the second wire.
