Splenic flexure mobilization is a challenging surgical procedure, but is it necessary to safely perform left colon and rectal resections. This paper is a technical focus detailing the four ways to mobilize splenic flexure in robotic surgery. The medial approach involves an extensive dissection of the medial plane separating descending mesocolon form Toldt fascia; the sovramesocolic approach starts with gastrocolic ligament section; the lateral approach starts with coloparietal detachment and the "one inch-one inch" approach starts with section of transverse mesocolon.