Iran because of it’ s geographic location, suitable climate and closure to consumer markets, especially Persian Gulf states, has the potential to produce ornamental plants such as cut flowers. Gerbera is one of ten commercial cut flowers in the world and fourth reputation of cut flowers in the world is assigned to it. This flower is semi sensitive to ethylene and has short vase life. Silver thiosulphate (STS) is a standard industrial material that despite of its contraindication in some countries, is used to prevent ethylene effect in cut flowers.1-methylcyclopropene (1-MCP) is a non-toxic gas that is known as an alternative to silver thiosulphate recently and its overcome effectiveness on external ethylene in many cut flowers and ornamental plants is identified. This material connects to ethylene receptors and prevents of ethylene activities. Considering the sensitive nature of gerbera to post harvest damages, short vase life of some varieties and absence of researches on anti- ethylene materials for this flower, this research is arranged with the aim of increasing the vase life and storage life of cut gerbera flower with Silver thiosulphate, 1-methylcyclopropene and determine the best concentration of these two materials. In order to our purposes, in the first experiment with silver thiosulphate in two parts (first: using two preveservation solution sucrose and 8-hydroxyquinoline sulfate. Second: sucrose only) and 4 concentration of zero (control), 0.1, 0.5, 1 mmol per liter at temperatures 20 ? C, in the second experiment 1-methylcyclopropene in four concentration zero (control), 0.5, 1, 1.5 micro liter per liter at temperatures of 20 degrees centigrade and third experiment with Silver thiosulphate with 4 concentrations zero (control), 0.1, 0.5, 1 mM per liter at 4 ? C temperature, some Physicochemical properties were measured. Experimental design was a factorial combination based on completely randomized design with three replications and two flowers per each replication.The results of the first experiment indicated the significant effect of silver thiosulphate on relative weight, the water potential, percentage of water of flower, the absorbed solution index, vase life and pH of preservation solution. In addition, results showed that the 0.1 mM silver thiosulphate improved physicochemical properties and increased the vase life of cut gerbera flowers than other treatments. In the first experiment also silver thiosulphate indicated that deletion of the preservation solution 8-hydroxyquinoline sulfate, silver thiosulphate, is still effective on vase life of gerbera cut flower. The results of the second experiment showed that 1-methylcyclopropene did not have Keywords: cut flowers Gerbera, silver thiosulphate (STS), 1-methylcyclopropene (1-MCP) , vase life and storage life