In light of WMAP results , we examine the observational constraint on the P-term inflation .
With the tunable parameter f , P-term inflation contains richer physics than D-term and F-term inflationary models .
We find the logarithmic derivative spectral index with n > 1 on large scales and n < 1 on small scales in agreement to observation .
We obtained a reasonable range for the choice of the gauge coupling constant g in order to meet the requirements of WMAP observation and the expected number of the e-foldings .
Although tuning f and g we can have larger values for the logarithmic derivative of the spectral index , it is not possible to satisfy all observational requirements for both , the spectral index and its logarithmic derivative at the same time . PACS number ( s ) : 98.80.Cq