Bis 2 Amino Pyridinium Maleate (B2APM) crystals are NLO in nature and are grown by solution growth method, since NLO materials are widely used for number of variety of applications such as ease of fabricating, high stability and wide range of transparency of light; they are proposed to be grown as the titled specimen. The single XRD data confirms that this crystal is having a as 21.760 A, b as 23.555 A, c as 5.626 A, α = β = γ= 90o and the crystal is orthorhombic in nature, Fdd2 is the space group of Bis 2 Amino Pyri dinium Maleate crystals. Structure is the combination of 2C5H7N2+.C4H2O4-.