Dr M said:i m sponsoring my wife & she is filling the applications of principal applicant
Do i need to fill Schedule A?
will i be included in generic form of my wife im0008 asd a spouse or not?
You only need to complete the forms that are listed on the Document Checklist for the sponsor. The 5669 Schedule A form is for the applicant, not the sponsor.
No, you will not be included on her form, even though you are her spouse. This would apply only if you were also being sponsored. Since you are the sponsor, you cannot sponsor yourself.

You should be listed as her spouse on the 5406 form (Additional Family Members).