The invention relates to a left-end loading-unloading mechanism of a filter element. The mechanism comprises a horizontal support; a rotatable clamp cover is fixedly installed at the left end of the horizontal support; and the clamp cover is connected with a rotation unit. A left mounting plate is fixedly connected to the left end of the horizontal support; a mounting shaft with a through hole formed in the center is fixedly installed at the end portion of the left mounting plate; and an inlet interface is connected to the outer end of the mounting shaft in a sealing mode. A clamping plate sleeves the inner end of the mounting shaft in a rotating mode and is fixed axially. When the mechanism is in use, one end of the filter element is abutted against the clamp cover to form a sealing state and the other end is arranged in a rotating and sealing mode. With the inflation interface, inflation at one end of the filter element is realized; and with the rotation unit, the end can be rotated conveniently, so that a requirement of convenient observation is met.