Two filed experiments were conducted at Moutobes district, Kafrelsheikh, Egypt during  2014 and 2015 seasons. The study amid to find out the performance of  loofah plants under  three  plant spacing's 4X4 m,6x6 and 6x8m. The observed results could be concluded as following: different plant spacing had a significant effect on studied characteristics  of loofah plants in both seasons: Narrow plant spacing  of 4x4m gave the maximum number of plants/fed, number of cobs/ plant, number of total cutting and average of yield kg harvests, fruits and yield / Fadden. Meanwhile, the lowest values of aforementioned traits were noticed by wider plant spacing of 6x8m. Furthermore, plant spacing 6x8m produced longest ear diameter, ear length, plant height fruits good marketable % and number of seeds / fruit. On the other hand, plant spacing of 4x4 produced the lowest ones of plant spacing 6x6 was moderately and came in the second rank in all studied characters in both seasons.