The invention discloses a safe air fryer capable of preventing food from splashing. The air fryer comprises a pot body, an inner container and a frying basket arranged in the inner container, wherein the pot body comprises a three-axis acceleration sensor, an electric control spring, a power supply module, a controller and an air baking and frying module; the pot body is internally provided with two cavities, the cross sections of the two cavities are the same, and the cavities are vertically communicated; a frying basket cover plate is placed in the upper cavity, and the lower cavity is open and contains the inner container and the frying basket; the frying basket cover plate is arranged in the upper cavity, and a protrusion is arranged at the joint of the bottom edge of the upper cavity and the lower cavity and used for fixing the frying basket cover plate; the frying basket cover plate is slightly smaller than the opening of the frying basket and just covers the opening of the frying basket; the electric control spring is arranged above the frying basket cover plate, the frying basket cover plate can be vertically pushed down after the spring pops out, so that the frying basket cover plate overcomes the obstruction of the protrusion and vertically falls into the frying basket, the opening of the frying basket is closed, and the frying basket is sealed. The frying basket cover plate falls to the frying basket when the air fryer falls or is collided by external force so that high-temperature food can be prevented from splashing, and the safety is high.