The utility model relates to an aerial hydrogen balloon, which solves the problem that the existing aerial defense device is invested highly and is a transparent hydrogen balloon or a hydrogen balloon with a bomb. The balloon is equipped with a balloon altitude support system powered by a solar cell supply or a solar cell accumulation supply. The bomb is equipped with a self-destruction device controlled by a clock or a controller. The bomb is provided with a friend or foe identification system. The bomb is a high-energy miniature bomb. The aerial hydrogen balloon can be massively intensively distributed by a rocket or a guided missile or an airplane, continuously floats in a certain height above the ground, and is used for attacking the enemy' aerial target which impacts or approaches the hydrogen balloon, thereby playing a role in compulsively blocking or containing the enemy' aerial force with low cost and defending the air supremacy.