1. Claim 1: the surface active sugar in formula (1), R 1 is h, or 1 to 3 carbon atoms and R 2 square kilometers of tar group is a linear water chain group of polyhydroxy hydrogen carbides, wherein at least three hydrogen Xi groups are directly connected with the chain, preferably a 2.3.4.5.6 pentahydroxy-1-ilo group. Claim 2: according to the requirements of item 1, the characteristics of sugar surfactant are that these symbols have the following formula meanings (1): R 1 is a group of 1 to 3 carbon atoms of tar, R 2 es-ch8322 - (chho) - 8345； - ch8322； - ch8322； (ch8322； (chjoh) 8345；； or4 or 5 and R3 are h or periodic polycystic monkeys. Claim 3: according to claim 1 or 2, a sugar surfactant, characterized in that the formula has the following meanings (1): R 1 is methyl, R 2 is r-es-ch-8322 - (chho) 8324a-ch8322oh； 7. Claim 7: adyovante component in line with one of the four to six claims, which is characterized by a gap (A3),selected from propylene glycol, dipropylene glycol, mixtures of propylene glycol and dipropylene glycol, in each case optionally mixed with polypropylene glycol and / or polyethylene glycol, in each case with up to ten repeating units, preferably, propylene glycol. Claim 11: Composition of active ingredient containing (W1) one or more sugar surfactants of the formula (1) according to one of claims 1 to 3, wherein (W2) is water, (W3) one or more ingredients water-soluble assets, (W4) optionally at least one cosolvent, (W5) optionally one or more ammonium salts and (W6) optionally one or more hardeners,(W7) select one or more adyuvantes (W8) or one or more soluble active ingredients. 13. Claim 13: agricultural chemical composition of the active ingredient in line with claim 12, which is characterized by the selection of one or more soluble active agricultural chemical ingredients from the ingredient (W3) as plant nutrients, plant reinforcement agents, plant growth regulators and herbicides, It is better to be a compound herbicide of acid fluor
