自行火炮是一种安装在各种车辆底盘上、不需外力牵引就能自行移动的火炮。早在1914年,苏联就制造出了世界上第一门安装在卡车底盘上的76毫米自行高射炮。二战期间,自行火炮得到了迅速发展,仅苏联就研制了5种口径、9个型号的自行反坦克火炮,3年左右时间生产了31万辆,在战争中发挥了重要作用。二战后期,日本虽然也制造出一系列自行火炮 Self-propelled artillery is a kind of artillery mounted on a variety of vehicle chassis, can move on its own without external traction. As early as 1914, the Soviet Union built the world’s first self-propelled anti-aircraft self-propelled 76mm gun mounted on the chassis of a truck. During World War II, self-propelled artillery was rapidly developed. Only the Soviet Union developed 5 self-propelled anti-tank artillery with caliber and 9 models and produced 310,000 vehicles in about 3 years, playing an important role in the war. In the latter part of World War II, Japan also created a series of self-propelled artillery pieces