The invention relates to the technical field of safety hook devices for building construction, and discloses a portable hook convenient to carry and stable in structure. The portable hook comprises aclamping sleeve, and a fixed clamping block is movably sleeved with the clamping sleeve. The portable hook convenient to carry and stable in structure is provided with the clamping sleeve, a group ofanti-falling mechanisms are arranged on the periphery of the fixed clamping block, and a sealing spring is used for driving the fixed clamping block to move up and down in an inner cavity of the clamping sleeve to lock a fixing clamping groove, so that a suspended rope is prevented from falling off. Compared with an existing hook, the whole portable hook is simple in structure, structures are firmto connect, and therefore the whole hook has good stability and reliability. No serious influence is caused to a locking structure of the fixing clamping groove whether after long-time use or under the impact of huge external force, and the stability and safety of the portable hook are effectively improved.