The invention discloses a bidirectional self-closed anti-explosion floor drain which comprises a floor drain face plate handle, floor drain face plate bayonets, a floor drain face plate, a floor drain body, an upper sealing cover, a stainless steel spring, a carbon fiber filter, a lower sealing cover shaft hole, a floor drain body bottom surface drain opening, a lower sealing cover, a spring mounting groove, an upper sealing cover bottom sealing rubber mat, a waterproof annular edge and a suspension plate. The bidirectional self-closed anti-explosion floor drain has the advantages that the floor drain face plate can rotate in the clockwise direction by approximately 60-degree angles, so that the floor drain can be opened, and reversely, the floor drain can be completely closed and locked if the floor drain face plate rotates in the anticlockwise direction by 60-degree angles; bidirectional anti-explosion effects can be realized when the floor drain is in an opening state; the floor drain can be voluntarily sealed from the upper portion by the upper sealing cover under the effects of indoor shock waves, and can be voluntarily opened under the effect of the spring after the shock waves disappear; the floor drain can be voluntarily sealed from the lower portion by the lower sealing cover under the effects of shock waves of sewer pipelines, and can be voluntarily opened under the effect of the gravity of the floor drain after the shock waves disappear; sewage filtering, deodorizing and insect preventing effects can be realized by the carbon fiber filter, and the carbon fiber filter needs to be cleaned regularly.