This research  aimed  to  identify  rural   knowledge  of  harms of  the  unsafe    use  of  plastics  as a dependent variable and its correlation relationship with some rural women respondents  distinguished characteristics as independent variables, also to identify  their information sources about  unsafe    use  of  plastics .
-   Data were collected  through  personal  interview  questionnaire  from a simple  random  sample  amounted  to  130  rural  housewives  in  Merza village in In AL Mamora area, Alexandria Governorate                                    
-     Frequencies, percentages, person and simple correlation coefficients and Chi square were used to analyse data and show the results.                                                        
The results revealed that: 
-     6.2% of respondents were found in the low level category of knowledge  of      harms of  the  unsafe    use  of  plastics.
-  36.2% of  respondents   were  found  in  the moderate (middle) level  category of knowledge of  harms of  the  unsafe    use  of  plastics ,while  57.6%  of the  respondents were  found  in the  high level category.
-     There was a positive  significant  relationship between the respondent's knowledge  of  harms of  the unsafe  use  of  plastics  as a dependent variable and both of respondent's job, respondent's educational status, family type, plastic purchase source , knowledge of  illustrated guide and doing handcrafts as independent variables at level of significance  0.01%.
- There was a positive  significant  relationship between the respondent's knowledge  of  harms of  the  unsafe    use  of  plastics  as a dependent variable and  the respondent's age as an independent variable at level of significance  0.05.
-     There was a negative significant  relationship between the respondent's knowledge  of  harms of  the  unsafe    use  of  plastics  as a dependent variable and both of  monthly family income  and  participation  in  environmental  activities  as independent variables  at level of significance 0.01%.
-     According to the respondent's information sources about  the results revealed that : Television   was  come in the first rank (57.4  % ) , then the internet  come   in the second  rank ( 60 %) , relatives come  in  the  third  rank ( 52.3 % ),  then  radio in the  fourth rank ( 33.1  %) then health visitor, rural development an engineer, extention  posts and papers and magazines with ratios ( 18.5%) , ( 10%) , (9.2%) (7.7 %) and ( 6.9%) respectively.