Aiming at the problem of short-term superhydrophilicity and long wettability transition period of laser etched metal surface, we optimized the laser etching parameters to construct micro/nano layered papillary structures on the surface of red copper, and manufactured the superhydrophilic samples. After being thermally oxidized for 3 h at high temperature under water vapor environment, the samples were annealed with ethanol for 15 min in a 150 ℃ tubular furnace. The water contact angle on the surface of the samples increased from (4.0±0.7)° before annealing to (150.7±0.6)° after annealing, and the sample surface changed rapidly from superhydrophilic to superhydrophobic, which greatly improved the wettability transformation efficiency.