The utility model provides a novel toy bullet, which comprises a bullet body, wherein, the bullet body is an enclosed casing provided with a hollow cavity arranged therein as well as a casing wall. The novel bullet has the advantages that a sound resembling the explosion of a real bullet can be sent out when the toy bullet is cracked, and smog can be given off through the impact of a gas inside the casing, so that the integration of the sound and visual effect of the real bullet can bring to a player an immersed feeling, thereby effectively improving the fun of a toy gun; the filling gas adopted by the bullet is non-poisonous and harmless and contains no gun powder, thereby improving the safety of the transport and use thereof and complying with the requirements of international and EU organizations on product safety and environmental protection; and the bullet with simple structure is easy to manufacture, install and use, thereby facilitating the large-scale promotion and application.