Laundry detergent

The invention discloses a laundry detergent, which comprises an effective amount of an anionic surfactant, an effective amount of a nonionic surfactant and/or an ampholytic surfactant, and an effective amount of a polyquaternium salt and water. The invention also discloses a preparation method of the laundry detergent, which comprises the following steps: adding the anionic surfactant, nonionic and/or zwitterionic surfactant, mixed bactericide, polyquaternium and acaricide into water, regulating the pH value, adding the preservative and essence, and stirring and mixing the components to obtainthe laundry detergent. The laundry detergent disclosed by the invention integrates washing and softening functions, has the characteristics of sterilization and acarus killing effects, low cost, goodfoamability, convenience in use and high dirt-removing power, and the washed clothes are soft and fluffy and do not influence the moisture absorption performance of fabrics. 本发明公开了一种洗衣液，包括：有效量的阴离子表面活性剂，有效量的非离子表面活性剂和/或两性表面活性剂，