The research aimed to determine performance degree of Central Laboratory for Agricultural Climate extension activities to reduce the negative effects of climatic changes on the studied crops from the perspectives of the respondents working in the Central Laboratory for Agricultural Climate and farmers. The research was conducted in the governorates of Beheira and Kafr El-Sheikh, data were collected from 50 respondents of Central Laboratory for Agricultural Climate staff, and 285 of farmers using questionnaire with personal interview during November and December 2021. Results were as follows: 54% of the workers in the central laboratory for agricultural climate, and 60% of the farmers believe that the laboratory educate farmers to reduce the negative effects of climate changes. 26 % of the workers in the central laboratory for agricultural climate reported that the laboratory trains studied farms at average degree, and 35.8% of the farmers reported that the laboratory did not train them at all. 50 % of the workers in the central laboratory for agricultural climate reported that the laboratory follow up implementation of the recommendations to reduce the negative effects of climate changes on the studied crops at an average degree, and 35.8% of the farmers reported that the laboratory did not follow up them at all. 42% of workers believe that the laboratory is guiding the farmers to reduce the negative effects of climate changes on the studied crops at an average degree, while 43.7% of the farmers it was a low level.