The invention belongs to the technical field of agricultural irrigation equipment, and more specifically relates to an obstruction-resistant fertilizing apparatus used for agricultural irrigation. The obstruction-resistant fertilizing apparatus is composed of a water-supply-pipe (1), a water pump (2), a solenoid valve (3), a solar energy generating apparatus (4), a control apparatus (5), a fertilizer pot (6), and an outlet pipe (7); the water pump (2), the fertilizer pot (6) and the solenoid valve (3) are arranged on the water-supply-pipe (1) in order, the outlet pipe (7) is arranged on the water-supply-pipe (1), the solar energy generating apparatus (4) is arranged at the other side, an antiskid pipe (8) is arranged on the outlet pipe (7), and closely distributed water holes (9) are arranged on the surface. The control apparatus (5) is respectively connected with the solenoid valve (3) and the sensor (10) on the outlet pipe (7) through leads. The obstruction-resistant fertilizing apparatus has the beneficial effects that the automation control is realized, labor force is saved, and the production cost is reduced.