A tiller, includes a of tilling tines (10), a till upper cover (11) which covers upper parts of the tilling tines (10), a ridging body (20) which is disposed at a rear end of the till upper cover (11) and which is a trapezoid form where an upper is longer than a lower side in rear view, a till cover body (C, D) which is disposed at a rear end of the till upper cover (11) and which is pivoted on a horizontal axis, a first connection implement (28) which connects the ridging body (20) and the till cover body (C, D) that is pivoted downward at the time of tilling work, and a second connection implement (35) which fixes the till cover body (C, D) that is pivoted upward in an upper position at the time of ridging work.
