The invention relates to a multifunctional tillage machine comprising a rotation wheel (1), a transmission wheel (2), a transmission wheel coupling shaft (3), a back support (4), a belt (5), a front support (6), a seed-distribution wheel coupling shaft (7), a speed-adjusting transmission wheel (8), a seed-distribution wheel (9), a seed-distribution belt loop (10), a seed conveying pipe tension spring (11), a seed accommodation bin (12), a seed conveying pipe (13), a seed conveying pipe rotation shaft (14), a seed conveying hose (15), a seed scraper (16), a seed-receiving funnel (17), a seed discharge pipe (18), a rotation colter (19), a colter rotation shaft (20), a positioning pin (21), vertical springs (22), an earth flattening device (23), a connection rack (24), trailer racks (25), and horizontal springs (26). The tillage machine is fully functional and multifunctional, and has high adaptability. The method for switching among the functions is simple and flexible. The operation is simple, and maintenance and reparation are convenient. Multiple functions are integrated, such that agricultural machinery comprehensive cost is greatly reduced. The tillage machine greatly promotes grower cultivation enthusiasm.