This utility model discloses a waterproof computer power supply, belonging to the field of computer power supply technology. It includes: a power supply body with a storage groove inside; a wiring harness groove, a side groove, and a heat dissipation groove on one side of the power supply body; a
power cord inside the wiring harness groove; and a connecting wire harness on the other side of the power supply body. This utility model incorporates a pull-out sealing mechanism. This design utilizes a pull-out structure to achieve sealed protection for the power supply. When the power supply is in use, the pull-out structure can be pulled out and quickly positioned according to the usage area, ensuring normal operation of the power supply. When not in use, it can seal the power supply, preventing external
moisture and water from entering, thus extending the power supply's lifespan and safety, and improving its practical application.