A transverse-axis impact sprinkler has a base, pivot joint frame, water inlet pipe, front transverse watering pipe, impact guiding frame, and a pivot angle controlling mechanism. The water introduced by the water inlet pipe will firstly pass through the front transverse watering pipe, and then is sent to the water spout provided on the turning pipe portion of the impact guiding frame, to drive the front transverse watering pipe to rotate synchronously along the swing of the impact guiding frame. The impact sprinkler is of a simplified structure, has a reduced failure rate and enhanced durability and ease of use.