In order to solve the problems of rape seed and fertilizer leaking in seeding process using shallow-tilling seeder, seeding and fertilizing system of 2BYD6 shallow tilling and fertilizing seeder for rapes was improved. The driving power of the system was turned from passive driving to servo motor active driving, the forward speed of the machinery was synchronized by rotational speed of the motor, monitoring alarm system was installed below the seed box and the fertilizer box at the end of the seeding pipe, the bottom of fertilizer box was innovatively designed, and a device for soil-covering and pack rolling was added. Field test results showed that the pure working-hour productivity was improved by 15.4%, and abnormal seeding and fertilizing could be automatically alarmed.