A bamboo curtain knitting machine with controllable space between bamboo splits was designed by improved existing bamboo curtain knitting machine.Bamboo splits can be weave continuously in needed distance by the improved bamboo curtain knitting machine.The position of bamboo splits can keep fixation in bamboo curtain to decreasing the using amount of bamboo splits, the weight and cost of bamboo-veneer.The structure and work principle of improved bamboo curtain knitting machine were discussed in the paper.The analysis of harmony connection of movement were made to motive power union mechanism between bamboo splits being entered and weaved, pressed and knocked out, the movement parameters connection of constituent parts of the distance between bamboo splits of control device.The formula of distance between bamboo splits to distance being knocked out and turns of fork shaft was given.The formula of turns of bamboo split entering roller and cam shaft was gave. The formula of turns of fork shaft to number of rod of geneva wheel and round pin in drive plate was gave.