The utility model relates to the technical field of watermelon planting, in particular to a
drip irrigation device for watermelon planting, which comprises a transverse frame body and a
drip irrigation mechanism, a top frame is mounted on the outer side of the top of the transverse frame body, a hanging frame is arranged at the middle end of the top of the top frame, a
water storage box is fixed at the bottom of the hanging frame, and a filter core plate is arranged in the
water storage box. A conveying
pipe is laid at the bottom of the
water storage box, a
drip irrigation mechanism is arranged on the inner side of the transverse frame body, the drip
irrigation mechanism comprises an outer water dripping
pipe, a water dripping
nozzle, an inner water dripping
pipe, a threaded wall, a water dripping pipe inner wall, a blocking spring, a spring ring frame and a sealing ball, and the water dripping pipe inner wall is arranged in the outer water dripping pipe; the watermelon
seedling drip
irrigation device solves the problems that in the prior art, when an existing device conducts drip
irrigation on watermelon seedlings, the flow during drip irrigation cannot be well controlled, the irrigation amount and the fertilization amount cannot be timely adjusted according to the
growth cycle of crops and the
soil moisture content, and precise irrigation and fertilization cannot be achieved.