The present invention provides a multi-segment rotation robotic arm. The robotic arm contains a plurality of 360-degree elbow rotations and the robotic arm can be arbitrarily connected with a plurality of robot arm segments in accordance with use requirements. When rotating relatively, the robotic arm can rotate 360 degrees without affecting the power supply at all, and can also reduce the volume increase that could be caused by joints at the same time. Therefore, the robotic arm of the present invention can effectively adapt to complex and tortuous spaces in the body cavity to reduce the possibility of expanding the opening of the minimally invasive surgery and causing damage to organs or tissues in the body cavity.本創作提供一種具有多個可三百六十度旋轉手肘之用於外科手術及內科內視鏡檢查的機械手臂,其能夠完全依照使用需求,任意地串接複數個機械手臂段,且該些機械手臂段在進行相對地轉動時,能夠沿著彼此間的斜截切面進行三百六十度的轉動,而完全不影響電力的供應,且還能夠同時減少關節可能導致的體積增加,因此本創作之機械手臂能夠有效的適應體腔內複雜且曲折的空間,以減少擴大微創手術之開口及造成體腔內器官或組織損傷的可能,且因為能夠獨立的調控本創作之機械手臂中各別的該機械手臂段,因此能夠提升本創作之機械手臂的機動性及精準性。