PROBLEM TO BE SOLVED: To provide a seedling transplanting machine for detecting ridges while contacting a ridge surface with a ridge end sensor to perform seedling transplanting work, and to stop running even if the ridges have some dented portions. The challenge is to ensure that it stops at the end of the ridge. SOLUTION: In a seedling transplanting machine in which a ridge end sensor 90 for detecting ridges by contacting the tip 90ce with the ridge surface is suspended from the bottom of the vehicle body 2 traveling across the ridges by the traveling devices 10 and 13, the ridge end is provided. The sensor 90 is a seedling transplanting machine characterized in that a rotating ground contact body 90d that touches the ridge surface is provided on the bottom surface of the tip of a sensor arm 90c that is rotatably provided on the vehicle body 2. [Selection diagram] FIG. 11【課題】本発明は、畝終端センサが畝面に接触しながら畝を検出して苗の移植作業を行う苗移植機で、畝に多少の凹んだ部分があっても走行を停止することがなく畝の終端で確実に停止するようにすることを課題とする。【解決手段】走行装置１０，１３で畝を跨いで走行する車体２の底部に、先端部９０ｃｅが畝面に接触して畝を検出する畝終端センサ９０を吊り下げて設けた苗移植機において、前記畝終端センサ９０は、車体２に回動可能に設けるセンサアーム９０ｃの先端底面に、畝面に接地する回転接地体９０ｄを突出させて設けて構成することを特徴とする苗移植機とする。【選択図】図１１
