A tray is mounted on a mount of a stroller and includes a tray structure, a first mounting latch and a mounting arm formed from the tray structure. The first mounting latch is disposed on the mounting arm and has a first button movably disposed on the mounting arm, a clamping base connected to the first button and disposed in the mounting arm, and an elastic member disposed on the clamping base for providing a first elastic force to bias the clamping base toward a latched position to clamp the mount cooperatively with the mounting arm when the mounting arm is mounted on the mount and the first button is engaged with an engaging groove of the mount. When the first button is pressed for moving the clamping base to an unlatched position, the clamping base is separate from the mount to make the mounting arm detachable from the mount.