A physical model is derived to control the -photothermal enhancement based on regulating the degree of asymmetry in an artificial asymmetric gold nanostructure.Absorption spectrometry and distribu tion of electromagnetic fields from this nanostructure and its asymmetric deformations under the water are carr ied out by taking advantage of discrete dipole approximation (DDA).Furthermore,the -photothermal enhancement of this n a nostructure is also simulated through the Fourier′s law of heat conduction.The numerical simulations show that the position,profile and strength of resonance absorption spectrum are significantly affected by the degree of asymmetry in thi s nanostructure.Moreover,as magnetic energy can be effectively converted into thermal energy by adjusting the degree of asymmetry,strong localized confinement and high enhancement of thermal energy around the nanostructure ca n be realized.The temperature from thermal enhancement can be a controlled over a wide range of near-infrared spec trum.This theoretical model can be reference for the precision control of the temperature at the nanoscale and the design of thermoplasmonics.