Plant terpene volatiles of influence insect behaviors with many monoterpenes being highly volatile. In order to control release of such active volatile compounds, and to maintain a certain active duration, three major Larix gmelinii needlerelated volatiles α-pinene、myrcene and camphene were poured into the slow-release bottles. The slow-release bottles of each volatile compound were suspended onto the lower part of 2-year old L. gmelinii seedlings in comparison with those spayed with the corresponding solutions made straight from the volatile compounds. The attraction and oviposition behaviors of Dendrolimus superans female adults and on these volatile treated larch seedlings were studied in an indoor Y-tube olfactometer and an outdoor caging bioassay, respectively, at each day for six days, and the activities of several major defense protein in larch needle were measured. Our results from lab Y-tube bioassay showed that α-pinene and myrcene from the solutions were significantly attractive to D. superans female adults at day one. Seedlings suspended with the slow-release bottles of α-pinene and myrcene also showed significant attraction to D. superans female adults for five days. Camphene from the synthetic solution showed significant repellency at day one, and seedlings suspended with the slow-release bottles also showed significant repellency effect for four days. The outdoor caging bioassays showed that slow-release bottles of α-pinene and myrcene significantly increased female oviposition (number of eggs) whilst the slow-release bottles of camphene significantly reduced the number of eggs laid on treated seedlings. These effects from these slow-release bottles lasted for three days. Our data suggest that slow-release bottles with these highly volatile compounds may provide a feasible control release formulation to extend their effective life-span (duration).The activities of POD, CAT, PAL, PPO, CI and TI were not significantly different. This shows that a single α-pinene, myrcene or limonene does not make activities of several major defense protein in larch needle change, and does not enhance induced resistance of larch.