Abstract: A pneumatically and manually actuating toy gun structure includes a main body, a barrel, an energy source, a first control portion, and a second control portion. When the toy gun structure is driven by high-pressure gas, one can pulls the pivotally furnished connecting rod by pressing the trigger of the first control portion, and the meshing catch portion furnished beneath the connecting rod is capable of exactly driving the hook portion of the knock hammer making it generate a rotational power to hit the gas valve and letting the gas flow into the barrel through the sleeve barrel of the second control portion and shoot the plastic bullets. However, when the gas is used up, one can directly pull the handle of the piston of the second control portion making the piston move backward and letting a flange beneath the piston exactly catch an angle portion of a piston catch.