Herein, Fe-based cladding coatings are prepared on Q235 carbon steels using a pulsed laser. The effects of heat treatment temperatures of 600 ℃, 750 ℃, and 900 ℃ on these coatings are investigated. In addition, the microstructures, phase compositions, and mechanical properties of these coatings are characterized. Moreover, the corrosion behaviors of these coatings before and after heat treatment are examined. The results show that after heat treatment, the coatings were observed to consist of both crystalline and amorphous structures. The content of the crystalline phase increases with the increase of heat treatment temperature, and heat treatment can increase the near surface hardness of cladding layers, specifically, the average hardness of cladding layers is the highest at approximately 1100 HV0.1 under the heat treatment of 900 ℃ for 2 h. The anti-corrosion performance of coatings improves with the increase of heat treatment temperature, and the Fe-based cladding layers after heat treatment of 900 ℃ for 2 h show the highest corrosion potential of -0.52500 V, the lowest corrosion current density of 2.2810×10 -6 A/cm 2, implying the highest anti-corrosion performance.