  We introduce a pre-Jacobi-Jordan algebras and study some relevant properties
such as bimodules, matched pairs. Besides, we established a pre-Jacobi-Jordan
algebra built as a direct sum of a given pre-Jacobi-Jordan algebra $(\A,
\cdot)$ and its dual $(\A^{\ast}, \circ),$ endowed with a non-degenerate
symmetric bilinear form $B,$ where $\cdot$ and $\circ$ are the products defined
on $\A$ and $\A^{\ast},$ respectively. Finally, after pre-Jacobi-Jordan
algebras classification in dimension two, we thoroughly give some double
constructions of pre-Jacobi-Jordan algebraic structures.
