Conventional sharpening or enhancement algorithms based on Gauss or Laplasse templates are discussed,while the hemming phenomenon exists usually with obviously dark or bright wrapping problems,contrasted with the adjacent images.By weights calculating based on positional differences with Gauss or Laplasse,conventional algorithm can cause image wrapping in high frequency image information.Therefore,in processing of high frequency details,the method is put forward by adding weights to adjust weights mode with gray scale differences or adopting simpler high frequency detail cut-off mode.Results show the edge-wrapping problem with enhancement algorithm is effectively improved.