Endoscopic resection (ER) is the treatment of choice for early gastric cancer (T1) without lymph node involvement. An additional gastrectomy with D2 lymphadenectomy is recommended if ER is considered as non-curative. Here, we present a case of a robot-assisted sentinel lymph node procedure performed with the use of duel-tracer, including ICG fluorescence and technetium-99, after a non-curative ESD for an early gastric tumor. Five “hot” lymph nodes were resected, one of which was positive for metastasis. A subtotal gastrectomy with D2 lymphadenectomy was performed additionally during the same procedure. This case presentation indicates the feasibility of a robot-assisted sentinel lymph node procedure in early gastric cancer.