A minimally invasive thoracic cavity drainage tube and drainage surgical instrument satisfying anthropotomical characteristics. The drainage tube comprises a tube body (1). An external segment (101), a first bending part (102), a transition segment (103), a second bending part (104), and an internal segment (105) are sequentially disposed on the tube body (1). A part between the external segment (101) and the transition segment (103) is bent by using the first bending part (102). A part between the transition segment (103) and the internal segment (105) is bent by using the second bending part (104). The internal segment (105) at least has a part of a fitting arc segment for fitting an inner wall (2) of a thoracic cavity. The drainage tube can implement minimally invasive surgery of a thoracic cavity, better satisfy anthropotomical characteristics, effectively avoid narrowness of a tube cavity, and has a better drainage effect.
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